Currently we only have one type of configuration options: graph.cache_xx, like
graph.cache_capacity and graph.cache_expire, we need more precise options of the cache.

Initing HugeGraph Store...
2018-08-22 16:54:58 718 [main] [INFO ] com.baidu.hugegraph.cmd.InitStore [] - Init graph with config file: conf/hugegraph.properties
2018-08-22 16:54:58 819 [main] [INFO ] com.baidu.hugegraph.HugeGraph [] - Opening backend store 'rocksdb' for graph 'hugegraph'
2018-08-22 16:54:58 865 [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Opening RocksDB with data path: ./rocksdb-data/schema
2018-08-22 16:54:59 1043 [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Failed to open RocksDB './rocksdb-data/schema' with database 'hugegraph', try to init CF later
2018-08-22 16:54:59 1160 [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Opening RocksDB with data path: ./rocksdb-data/system
2018-08-22 16:54:59 1217 [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Failed to open RocksDB './rocksdb-data/system' with database 'hugegraph', try to init CF later
2018-08-22 16:54:59 1276 [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Opening RocksDB with data path: ./rocksdb-data/graph
2018-08-22 16:54:59 1325 [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Failed to open RocksDB './rocksdb-data/graph' with database 'hugegraph', try to init CF later
2018-08-22 16:54:59 1409 [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Opening RocksDB with data path: ./edge_in/graph
2018-08-22 16:54:59 1411 [main] [ERROR] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Failed to open RocksDB './edge_in/graph'
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStdSessions.(RocksDBStdSessions.java:113) ~[hugegraph-rocksdb-0.7.4.jar:?]
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore.openSessionPool(RocksDBStore.java:206) ~[hugegraph-rocksdb-0.7.4.jar:?]
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore.open(RocksDBStore.java:154) [hugegraph-rocksdb-0.7.4.jar:?]
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore.open(RocksDBStore.java:143) [hugegraph-rocksdb-0.7.4.jar:?]
at com.baidu.hugegraph.HugeGraph.initBackend(HugeGraph.java:187) [hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.cmd.InitStore.initBackend(InitStore.java:115) [hugegraph-dist-0.7.4.jar:?]
at com.baidu.hugegraph.cmd.InitStore.initGraph(InitStore.java:103) [hugegraph-dist-0.7.4.jar:?]
at com.baidu.hugegraph.cmd.InitStore.main(InitStore.java:86) [hugegraph-dist-0.7.4.jar:?]
Exception in thread "main" com.baidu.hugegraph.backend.BackendException: Failed to open RocksDB './edge_in/graph'
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore.open(RocksDBStore.java:186)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore.open(RocksDBStore.java:143)
at com.baidu.hugegraph.HugeGraph.initBackend(HugeGraph.java:187)
at com.baidu.hugegraph.cmd.InitStore.initBackend(InitStore.java:115)
at com.baidu.hugegraph.cmd.InitStore.initGraph(InitStore.java:103)
at com.baidu.hugegraph.cmd.InitStore.main(InitStore.java:86)
Caused by: org.rocksdb.RocksDBException: While lock file: ./rocksdb-data/graph/LOCK: No locks available
at org.rocksdb.RocksDB.open(Native Method)
at org.rocksdb.RocksDB.open(RocksDB.java:286)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStdSessions.(RocksDBStdSessions.java:113)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore.openSessionPool(RocksDBStore.java:206)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore.open(RocksDBStore.java:154)
... 5 more

Expected behavior 期望表现

{type something here...}

Actual behavior 实际表现

{type something here...}

Steps to reproduce the problem 复现步骤

1. {step 1}
2. {step 2}
3. {step 3}

Status of loaded data 数据状态

Vertex/Edge summary 数据量

• loaded vertices amount: {like 10 million}
• loaded edges amount: {like 20 million}
• loaded time: {like 200s}

Vertex/Edge example 数据示例

{type something here...}

Schema(VertexLabel, EdgeLabel, IndexLabel) 元数据结构

{type something here...}

Specifications of environment 环境信息

• hugegraph version: {like v0.7.4}
• operating system: {like centos 7.4, 32 CPUs, 64G RAM}
• hugegraph backend: {like cassandra 3.10, cluster with 20 nodes, 3 x 1TB HDD disk each node}

hugegraph-0.7.4/conf/hugegraph.properties配置文件， 增加如下配置：
batch.max_edges_per_batch=1000
batch.max_vertices_per_batch=1000
将顶点数据和边数据按照1000进行批量导入，Rest服务器直接返回500错误，整型和字符串转换失败：
b'{"exception":"class java.lang.ClassCastException","message":"java.lang.String cannot be cast to java.lang.Integer","cause":""}'

使用loader的example目录下文件导入测试，出现如下错误：

Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy52.create(Unknown Source)
at com.baidu.hugegraph.structure.schema.SchemaBuilder$create.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117)
at Script1.run(Script1.groovy:15)
at com.baidu.hugegraph.loader.executor.GroovyExecutor.execute(GroovyExecutor.java:62)
at com.baidu.hugegraph.loader.HugeGraphLoader.createSchema(HugeGraphLoader.java:161)
at com.baidu.hugegraph.loader.HugeGraphLoader.load(HugeGraphLoader.java:104)
at com.baidu.hugegraph.loader.HugeGraphLoader.main(HugeGraphLoader.java:68)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.baidu.hugegraph.structure.schema.BuilderProxy.invoke(BuilderProxy.java:56)
... 10 more
Caused by: class java.lang.IllegalArgumentException: Not all index fields '[city]' are contained in schema properties '[age, name, addr, weight]'
at com.baidu.hugegraph.exception.ServerException.fromResponse(ServerException.java:44)
at com.baidu.hugegraph.client.RestClient.checkStatus(RestClient.java:63)
at com.baidu.hugegraph.rest.RestClient.post(RestClient.java:119)
at com.baidu.hugegraph.rest.RestClient.post(RestClient.java:79)
at com.baidu.hugegraph.rest.RestClient.post(RestClient.java:74)
at com.baidu.hugegraph.api.schema.IndexLabelAPI.create(IndexLabelAPI.java:43)
at com.baidu.hugegraph.driver.SchemaManager.addIndexLabel(SchemaManager.java:147)
at com.baidu.hugegraph.structure.schema.IndexLabel$BuilderImpl.create(IndexLabel.java:125)
at com.baidu.hugegraph.structure.schema.IndexLabel$BuilderImpl.create(IndexLabel.java:108)
... 15 more

schema.groovy 配置文件信息如下：

schema.propertyKey("name").asText().ifNotExist().create();
schema.propertyKey("age").asInt().ifNotExist().create();
schema.propertyKey("city").asText().ifNotExist().create();
schema.propertyKey("weight").asDouble().ifNotExist().create();
schema.propertyKey("lang").asText().ifNotExist().create();
schema.propertyKey("date").asText().ifNotExist().create();
schema.propertyKey("price").asDouble().ifNotExist().create();

schema.vertexLabel("person").properties("name", "age", "city").primaryKeys("name").ifNotExist().create();
schema.vertexLabel("software").properties("name", "lang", "price").primaryKeys("name").ifNotExist().create();

schema.indexLabel("personByName").onV("person").by("name").secondary().ifNotExist().create();
schema.indexLabel("personByAge").onV("person").by("age").range().ifNotExist().create();
schema.indexLabel("personByCity").onV("person").by("city").secondary().ifNotExist().create();
schema.indexLabel("personByAgeAndCity").onV("person").by("age", "city").secondary().ifNotExist().create();
schema.indexLabel("softwareByPrice").onV("software").by("price").range().ifNotExist().create();

schema.edgeLabel("knows").sourceLabel("person").targetLabel("person").properties("date", "weight").ifNotExist().create();
schema.edgeLabel("created").sourceLabel("person").targetLabel("software").properties("date", "weight").ifNotExist().create();

schema.indexLabel("createdByDate").onE("created").by("date").secondary().ifNotExist().create();
schema.indexLabel("createdByWeight").onE("created").by("weight").range().ifNotExist().create();
schema.indexLabel("knowsByWeight").onE("knows").by("weight").range().ifNotExist().create()

将index部分删除后，执行导入依然报错：
`schema.propertyKey("name").asText().ifNotExist().create();
schema.propertyKey("age").asInt().ifNotExist().create();
schema.propertyKey("city").asText().ifNotExist().create();
schema.propertyKey("weight").asDouble().ifNotExist().create();
schema.propertyKey("lang").asText().ifNotExist().create();
schema.propertyKey("date").asText().ifNotExist().create();
schema.propertyKey("price").asDouble().ifNotExist().create();

schema.vertexLabel("person").properties("name", "age", "city").primaryKeys("name").ifNotExist().create();
schema.vertexLabel("software").properties("name", "lang", "price").primaryKeys("name").ifNotExist().create();

schema.edgeLabel("knows").sourceLabel("person").targetLabel("person").properties("date", "weight").ifNotExist().create();
schema.edgeLabel("created").sourceLabel("person").targetLabel("software").properties("date", "weight").ifNotExist().create();`

Vertices has been imported:Exception in thread "main" java.lang.IllegalStateException: The id field can't be empty or null when id strategy is CUSTOMIZE
at com.google.common.base.Preconditions.checkState(Preconditions.java:199)
at com.baidu.hugegraph.util.E.checkState(E.java:68)
at com.baidu.hugegraph.loader.parser.VertexParser.checkIdField(VertexParser.java:103)
at com.baidu.hugegraph.loader.parser.VertexParser.(VertexParser.java:43)
at com.baidu.hugegraph.loader.HugeGraphLoader.loadVertices(HugeGraphLoader.java:169)
at com.baidu.hugegraph.loader.HugeGraphLoader.load(HugeGraphLoader.java:111)
at com.baidu.hugegraph.loader.HugeGraphLoader.main(HugeGraphLoader.java:68)

但scheme中并没有将VertexId使用 CUSTOMIZE 策略。

期待回复~

暂时手动建立plugins目录，再次启动则可正常启动。

Expected behavior 期望表现

能够自行限制server的内存

Actual behavior 实际表现

{type something here...}

Steps to reproduce the problem 复现步骤

1. {step 1}
2. {step 2}
3. {step 3}

Status of loaded data 数据状态

Vertex/Edge summary 数据量

• loaded vertices amount: {like 10 million}
• loaded edges amount: {like 20 million}
• loaded time: {like 200s}

Vertex/Edge example 数据示例

{type something here...}

Schema(VertexLabel, EdgeLabel, IndexLabel) 元数据结构

{type something here...}

Specifications of environment 环境信息

• hugegraph version: {like v0.7.4}
• operating system: {like centos 7.4, 32 CPUs, 64G RAM}
• hugegraph backend: {like cassandra 3.10, cluster with 20 nodes, 3 x 1TB HDD disk each node}

sh bin/init-store.sh
Initing HugeGraph Store...
Error: Could not find or load main class .root.hugegraph-0.7.4.lib.hugegraph-dist-0.7.4-javadoc.jar

可以通过修改 bin/init-store.sh倒数第二行
exec $JAVA -cp $LIB --> exec $JAVA -cp $CLASSPATH:$LIB

来解决

同上

文档中的地址访问不了了

我正在尝试按照文档 Quick Start 执行一遍 HugeGraphSpark 的 Demo :
https://hugegraph.github.io/hugegraph-doc/quickstart/hugegraph-spark.html

Expected behavior 期望表现

--

Actual behavior 实际表现

开启 spark shell 在执行到

val graph = sc.hugeGraph("test")

时报错 :

Steps to reproduce the problem 复现步骤

https://hugegraph.github.io/hugegraph-doc/quickstart/hugegraph-spark.html

Status of loaded data 数据状态

已导入 , 可正常查询

Vertex/Edge summary 数据量

• loaded vertices amount: < 10000
• loaded edges amount: <100000
• loaded time: < 5 min

Specifications of environment 环境信息

• hugegraph version: v0.7.4
• operating system: centos 7.4
• hugegraph backend: hbase
• HugeGraphSpark version : 0.6.1
• spark version : 2.3.1

Expected behavior 期望表现

{type something here...}

Actual behavior 实际表现

{type something here...}

Steps to reproduce the problem 复现步骤

1. {step 1}
2. {step 2}
3. {step 3}

Status of loaded data 数据状态

Vertex/Edge summary 数据量

• loaded vertices amount: {like 10 million}
• loaded edges amount: {like 20 million}
• loaded time: {like 200s}

Vertex/Edge example 数据示例

{type something here...}

Schema(VertexLabel, EdgeLabel, IndexLabel) 元数据结构

{type something here...}

Specifications of environment 环境信息

• hugegraph version: {like v0.7.4}
• operating system: {like centos 7.4, 32 CPUs, 64G RAM}
• hugegraph backend: {like cassandra 3.10, cluster with 20 nodes, 3 x 1TB HDD disk each node}

我们建议大家使用Issues来反馈使用HugeGraph时遇到的问题，方便记录及共享信息。

国内开发者习惯通过微信群进行交流，也创建了微信技术交流群，请关注微信公众号HugeGraph进行留言，加入HugeGraph技术交流群。

1. multi-source vertex-step problem also exists, filter it.
2. mysql not supporting update vertex/edge property leads to using add vertex/edge to update property, which result in bug tx having 'added vertices' when update properties. fixed.
3. multi-thread tx commit not work. Reset mode to auto-commit after batch commit to fix

如题

使用HugeGraph怎么求解最短路径，是通过gremlin的语法实现吗，还是有直接的java api.

Expected behavior 期望表现

{type something here...}

Actual behavior 实际表现

{type something here...}

Steps to reproduce the problem 复现步骤

1. {step 1}
2. {step 2}
3. {step 3}

Status of loaded data 数据状态

Vertex/Edge summary 数据量

• loaded vertices amount: {like 10 million}
• loaded edges amount: {like 20 million}
• loaded time: {like 200s}

Vertex/Edge example 数据示例

{type something here...}

Schema(VertexLabel, EdgeLabel, IndexLabel) 元数据结构

{type something here...}

Specifications of environment 环境信息

• hugegraph version: {like v0.7.4}
• operating system: {like centos 7.4, 32 CPUs, 64G RAM}
• hugegraph backend: {like cassandra 3.10, cluster with 20 nodes, 3 x 1TB HDD disk each node}

Expected behavior 期望表现

期望hugegraph-loader导入数据正常

Actual behavior 实际表现

实际导入数据报错

Steps to reproduce the problem 复现步骤

下载 hugegraph-loader 0.7解压后运行（hugegraph-server运行正常，也实现执行过init-store）按照官方文档
运行的命令：bin/hugegraph-loader -g hugegraph -f example/struct.json -s example/schema.groovy
报错：
Exception in thread "main" null: <!doctype html><title>HTTP Status 404 – Not Found</title><style type="text/css">h1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} h2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} h3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} body {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} b {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} p {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;} a {color:black;} a.name {color:black;} .line {height:1px;background-color:#525D76;border:none;}</style>

HTTP Status 404 – Not Found

Type Status Report

Message /versions

Description The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.

Apache Tomcat/8.5.13

1. can't find blacklist resource file, resulting in NPE
2. TestGraph config xxxTest rather than xxxSuite, resulting in ERROR info
3. Vertex and Edge capacity were set 1000, resulting in tests failed

huge-server服务JVM参数支持可配吗?检查配置文件貌似没看到可以配置的地方

配置项：

但执行启动命令后，日志如下：

14:33:24.260 [main] DEBUG com.baidu.hugegraph.config.OptionSpace ID: TS: - Registered options for OptionHolder: StudioServerOptions
14:33:24.298 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'graph.server.host' is redundant, please ensure it has been registered
14:33:24.298 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'graph.server.port' is redundant, please ensure it has been registered
14:33:24.298 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'graph.name' is redundant, please ensure it has been registered
14:33:24.298 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'data.base_directory' is redundant, please ensure it has been registered
14:33:24.298 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'show.limit.data' is redundant, please ensure it has been registered
14:33:24.298 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'show.limit.edge.total' is redundant, please ensure it has been registered
14:33:24.299 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'show.limit.edge.increment' is redundant, please ensure it has been registered
14:33:24.299 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'gremlin.limit_suffix' is redundant, please ensure it has been registered
14:33:24.299 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'vertex.vis.font.color' is redundant, please ensure it has been registered
14:33:24.299 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'vertex.vis.font.size' is redundant, please ensure it has been registered
14:33:24.299 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'vertex.vis.size' is redundant, please ensure it has been registered
14:33:24.299 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'vertex.vis.scaling.min' is redundant, please ensure it has been registered
14:33:24.299 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'vertex.vis.scaling.max' is redundant, please ensure it has been registered
14:33:24.299 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'vertex.vis.shape' is redundant, please ensure it has been registered
14:33:24.300 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'vertex.vis.color' is redundant, please ensure it has been registered
14:33:24.300 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'edge.vis.color.default' is redundant, please ensure it has been registered
14:33:24.300 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'edge.vis.color.hover' is redundant, please ensure it has been registered
14:33:24.300 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'edge.vis.color.highlight' is redundant, please ensure it has been registered
14:33:24.300 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'edge.vis.font.color' is redundant, please ensure it has been registered
14:33:24.300 [main] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'edge.vis.font.size' is redundant, please ensure it has been registered
Sep 06, 2018 2:33:24 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-nio-192.168.3.31-8088"]
Sep 06, 2018 2:33:24 PM org.apache.tomcat.util.net.NioSelectorPool getSharedSelector
INFO: Using a shared selector for servlet write/read
Sep 06, 2018 2:33:24 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Tomcat
Sep 06, 2018 2:33:24 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/8.5.2
Sep 06, 2018 2:33:24 PM org.apache.catalina.startup.ContextConfig getDefaultWebXmlFragment
INFO: No global web.xml found
Sep 06, 2018 2:33:26 PM org.apache.jasper.servlet.TldScanner scanJars
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Sep 06, 2018 2:33:29 PM org.apache.jasper.servlet.TldScanner scanJars
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Sep 06, 2018 2:33:29 PM org.apache.catalina.core.ApplicationContext log
INFO: Spring WebApplicationInitializers detected on classpath: [org.glassfish.jersey.server.spring.SpringWebApplicationInitializer@64d936fe]
Sep 06, 2018 2:33:29 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
Sep 06, 2018 2:33:29 PM org.springframework.web.context.ContextLoader initWebApplicationContext
INFO: Root WebApplicationContext: initialization started
Sep 06, 2018 2:33:29 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing Root WebApplicationContext: startup date [Thu Sep 06 14:33:29 CST 2018]; root of context hierarchy
Sep 06, 2018 2:33:29 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
Sep 06, 2018 2:33:30 PM org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor
INFO: JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/root/hugegraph_studio/hugegraph-studio-0.7.0/lib/log4j-slf4j-impl-2.8.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/root/hugegraph_studio/hugegraph-studio-0.7.0/bin/tomcat.8088/webapps/api/WEB-INF/lib/log4j-slf4j-impl-2.8.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
14:33:30.702 [192.168.3.31-startStop-1] DEBUG com.baidu.hugegraph.config.OptionSpace ID: TS: - Registered options for OptionHolder: StudioApiOptions
14:33:30.736 [192.168.3.31-startStop-1] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'studio.server.port' is redundant, please ensure it has been registered
14:33:30.737 [192.168.3.31-startStop-1] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'studio.server.host' is redundant, please ensure it has been registered
14:33:30.737 [192.168.3.31-startStop-1] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'studio.server.ui' is redundant, please ensure it has been registered
14:33:30.737 [192.168.3.31-startStop-1] WARN com.baidu.hugegraph.config.HugeConfig ID: TS: - The config option 'studio.server.api.war' is redundant, please ensure it has been registered
14:33:30.738 [192.168.3.31-startStop-1] INFO com.baidu.hugegraph.studio.board.serializer.BoardSerializer ID: TS: - The board file path is: /root/.hugegraph-studio/board
Sep 06, 2018 2:33:30 PM org.springframework.web.context.ContextLoader initWebApplicationContext
INFO: Root WebApplicationContext: initialization completed in 1023 ms
Sep 06, 2018 2:33:31 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler [http-nio-192.168.3.31-8088]
14:33:31.337 [main] INFO com.baidu.hugegraph.studio.HugeGraphStudio ID: TS: - HugeGraphStudio is now running on: http://192.168.3.31:8088

执行 lsof -i:8088 发现此端口并没有被服务所拥有。

Expected behavior 期望表现

正确查询，满足一个label即可返回

Actual behavior 实际表现

java.lang.ClassCastException: java.lang.String cannot be cast to com.baidu.hugegraph.backend.id.Id at com.baidu.hugegraph.backend.tx.GraphTransaction.optimizeQuery(GraphTransaction.java:892) ~[hugegraph-core-0.7.4.jar:0.7.4.0] at com.baidu.hugegraph.backend.tx.GraphTransaction.query(GraphTransaction.java:292) ~[hugegraph-core-0.7.4.jar:0.7.4.0] at com.baidu.hugegraph.backend.tx.GraphTransaction.queryVerticesFromBackend(GraphTransaction.java:452) ~[hugegraph-core-0.7.4.jar:0.7.4.0] at com.baidu.hugegraph.backend.tx.GraphTransaction.queryVertices(GraphTransaction.java:443) ~[hugegraph-core-0.7.4.jar:0.7.4.0] at com.baidu.hugegraph.backend.cache.CachedGraphTransaction.queryVertices(CachedGraphTransaction.java:93) ~[hugegraph-core-0.7.4.jar:0.7.4.0] at com.baidu.hugegraph.HugeGraph.vertices(HugeGraph.java:337) ~[hugegraph-core-0.7.4.jar:0.7.4.0] at com.baidu.hugegraph.traversal.optimize.HugeGraphStep.vertices(HugeGraphStep.java:94) ~[hugegraph-core-0.7.4.jar:0.7.4.0] at com.baidu.hugegraph.traversal.optimize.HugeGraphStep.lambda$new$0(HugeGraphStep.java:66) ~[hugegraph-core-0.7.4.jar:0.7.4.0] at org.apache.tinkerpop.gremlin.process.traversal.step.map.GraphStep.processNextStart(GraphStep.java:139) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:50) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.process.traversal.step.filter.FilterStep.processNextStart(FilterStep.java:37) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:192) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils.fill(IteratorUtils.java:62) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils.list(IteratorUtils.java:85) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils.asList(IteratorUtils.java:382) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.server.handler.HttpGremlinEndpointHandler.lambda$channelRead$1(HttpGremlinEndpointHandler.java:239) ~[gremlin-server-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.util.function.FunctionUtils.lambda$wrapFunction$0(FunctionUtils.java:36) ~[gremlin-core-3.2.5.jar:3.2.5] at org.apache.tinkerpop.gremlin.groovy.engine.GremlinExecutor.lambda$eval$2(GremlinExecutor.java:320) ~[gremlin-groovy-3.2.5.jar:3.2.5] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_181] at com.baidu.hugegraph.auth.HugeGraphAuthProxy$ContextTask.run(HugeGraphAuthProxy.java:290) [hugegraph-api-0.7.4.jar:0.27.0.0] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_181] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_181] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]

Steps to reproduce the problem 复现步骤

g.V().hasLabel('person', 'software')

Status of loaded data 数据状态

Vertex/Edge summary 数据量

Vertex/Edge example 数据示例

Schema(VertexLabel, EdgeLabel, IndexLabel) 元数据结构

Specifications of environment 环境信息

• hugegraph version: v0.7.4

Throwed "Please close the old SessionPool before opening a new one" when CassandraStore.open()

使用rocksdb存储，启动服务，服务已经启动成功，但是提示“The operation time out when attempting to connect to http://xxx:port/graphs”

单机版和四台机器的集群cassandra都尝试过,导入点数据时,导入数量都是500增加一次,一秒钟不到500,有什么优化方法吗

使用curl命令和hugestudio连接完全没问题,在idea中使用hugeclient示例代码连接直接报错
连接代码:
HugeClient hugeClient = new HugeClient("http://localhost:8080", "hugegraph");
报错信息
Exception in thread "main" com.baidu.hugegraph.rest.ClientException: Failed to do request
at com.baidu.hugegraph.rest.RestClient.request(RestClient.java:69)
at com.baidu.hugegraph.rest.RestClient.get(RestClient.java:147)
at com.baidu.hugegraph.api.version.VersionAPI.get(VersionAPI.java:41)
at com.baidu.hugegraph.driver.VersionManager.getApiVersion(VersionManager.java:45)
at com.baidu.hugegraph.driver.HugeClient.checkServerApiVersion(HugeClient.java:101)
at com.baidu.hugegraph.driver.HugeClient.initManagers(HugeClient.java:84)
at com.baidu.hugegraph.driver.HugeClient.(HugeClient.java:59)
at com.baidu.hugegraph.driver.HugeClient.(HugeClient.java:48)
at hugegraph.SingleExampleJava.main(SingleExampleJava.java:14)
Caused by: javax.ws.rs.ProcessingException: javax.ws.rs.core.Response$Status$Family.familyOf(I)Ljavax/ws/rs/core/Response$Status$Family;
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:264)
at org.glassfish.jersey.client.JerseyInvocation$1.call(JerseyInvocation.java:684)
at org.glassfish.jersey.client.JerseyInvocation$1.call(JerseyInvocation.java:681)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:444)
at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:681)
at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:411)
at org.glassfish.jersey.client.JerseyInvocation$Builder.get(JerseyInvocation.java:311)
at com.baidu.hugegraph.rest.RestClient.lambda$get$2(RestClient.java:148)
at com.baidu.hugegraph.rest.RestClient.request(RestClient.java:67)
... 8 more
Caused by: java.lang.NoSuchMethodError: javax.ws.rs.core.Response$Status$Family.familyOf(I)Ljavax/ws/rs/core/Response$Status$Family;
at org.glassfish.jersey.message.internal.Statuses$StatusImpl.(Statuses.java:63)
at org.glassfish.jersey.message.internal.Statuses$StatusImpl.(Statuses.java:54)
at org.glassfish.jersey.message.internal.Statuses.from(Statuses.java:143)
at org.glassfish.jersey.client.internal.HttpUrlConnector._apply(HttpUrlConnector.java:397)
at org.glassfish.jersey.client.internal.HttpUrlConnector.apply(HttpUrlConnector.java:285)
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:255)
... 19 more

Expected behavior 期望表现

希望内存占用能够在不用的时候下降

Actual behavior 实际表现

比如刚启动hugegraph-server的时候内存占用3G,使用多次restapi查询之后,内存会到10g,而且不会下降,求问怎么解决

Steps to reproduce the problem 复现步骤

1. {step 1}
2. {step 2}
3. {step 3}

Status of loaded data 数据状态

Vertex/Edge summary 数据量

• loaded vertices amount: {like 10 million}
• loaded edges amount: {like 20 million}
• loaded time: {like 200s}

Vertex/Edge example 数据示例

{type something here...}

Schema(VertexLabel, EdgeLabel, IndexLabel) 元数据结构

{type something here...}

Specifications of environment 环境信息

• hugegraph version: {like v0.7.4}
• operating system: {like centos 7.4, 32 CPUs, 64G RAM}
• hugegraph backend: {like cassandra 3.10, cluster with 20 nodes, 3 x 1TB HDD disk each node}

The schema created at the beginning can't satisfy our requirement, so we have to modify the schema to load data into the database. When we modify the schema and invoke setProperty method, the following exception thrown:

com.baidu.hugegraph.exception.ServerException: Lock [il_delete:35] is locked by other operation
	at com.baidu.hugegraph.exception.ServerException.fromResponse(ServerException.java:44) ~[hugegraph-client-1.5.8.jar:1.5.8.0]
	at com.baidu.hugegraph.client.RestClient.checkStatus(RestClient.java:63) ~[hugegraph-client-1.5.8.jar:1.5.8.0]
	at com.baidu.hugegraph.rest.RestClient.put(RestClient.java:142) ~[hugegraph-common-1.4.9.jar:1.4.9.0]
	at com.baidu.hugegraph.api.graph.VertexAPI.append(VertexAPI.java:70) ~[hugegraph-client-1.5.8.jar:1.5.8.0]
	at com.baidu.hugegraph.driver.GraphManager.appendVertexProperty(GraphManager.java:143) ~[hugegraph-client-1.5.8.jar:1.5.8.0]
	at com.baidu.hugegraph.structure.graph.Vertex.setProperty(Vertex.java:73) ~[hugegraph-client-1.5.8.jar:1.5.8.0]
	at com.baidu.hugegraph.structure.graph.Vertex.property(Vertex.java:63) ~[hugegraph-client-1.5.8.jar:1.5.8.0]
	at com.baidu.hugegraph.structure.graph.Vertex.property(Vertex.java:30) ~[hugegraph-client-1.5.8.jar:1.5.8.0]
	at com.baidu.hugedragon.repository.graphdb.hugegraph.HugeGraphElement.setProperty(HugeGraphElement.java:118) ~[classes/:?]
	... 19 more

Steps to reproduce

• Create a vertex label
• Add a property key
• Add a property with property key created in last step in the vertex label
• Set value for the new created property

Environments

• hugegraph-client 1.5.8
• hugegraph-core 0.7.4

Expected behavior 期望表现

返回正常

Actual behavior 实际表现

{"exception":"class java.io.UncheckedIOException","message":"java.io.IOException: Failed to get result within timeout, timeout=60000ms","cause":"java.io.IOException: Failed to get result within timeout, timeout=60000ms"}
这里的timeout=60000ms 是在哪里设置的,能否调大,出现这个的原因是什么
有时候就重新查询可能出席那下面两个返回
{"exception":"class java.io.UncheckedIOException","message":"org.apache.hadoop.hbase.DoNotRetryIOException: java.lang.NoClassDefFoundError: Could not initialize class org.apache.hadoop.hbase.protobuf.ProtobufUtil","cause":"org.apache.hadoop.hbase.DoNotRetryIOException: java.lang.NoClassDefFoundError: Could not initialize class org.apache.hadoop.hbase.protobuf.ProtobufUtil"},
{"exception":"class java.lang.RuntimeException","message":"java.lang.OutOfMemoryError: GC overhead limit exceeded","cause":"java.lang.OutOfMemoryError: GC overhead limit exceeded"}
能否解释一下这几个是因为什么,

Steps to reproduce the problem 复现步骤

查了一个四度的k-neighbor,数据量比较大

Status of loaded data 数据状态

Vertex/Edge summary 数据量

• loaded vertices amount: {like 10 million}
• loaded edges amount: {like 20 million}
• loaded time: {like 200s}

Vertex/Edge example 数据示例

{type something here...}

Schema(VertexLabel, EdgeLabel, IndexLabel) 元数据结构

{type something here...}

Specifications of environment 环境信息

• hugegraph version: {like v0.7.4}
• operating system: {like centos 7.4, 32 CPUs, 64G RAM}
• hugegraph backend: {like cassandra 3.10, cluster with 20 nodes, 3 x 1TB HDD disk each node}

您好，系统配置：ubuntu18.04，scylladb作为后端，java1.80_181，按指南修改huge.properties后，初始化会出现主线程异常：
Exception in thread "main" com.datastax.driver.core.exceptions.InvalidQueryException: Index support is not enabled
at com.datastax.driver.core.exceptions.InvalidQueryException.copy(InvalidQueryException.java:50)
at com.datastax.driver.core.DriverThrowables.propagateCause(DriverThrowables.java:37)
at com.datastax.driver.core.DefaultResultSetFuture.getUninterruptibly(DefaultResultSetFuture.java:245)
at com.datastax.driver.core.AbstractSession.execute(AbstractSession.java:68)
at com.baidu.hugegraph.backend.store.cassandra.CassandraSessionPool$Session.execute(CassandraSessionPool.java:202)
at com.baidu.hugegraph.backend.store.cassandra.CassandraTable.createIndex(CassandraTable.java:566)
at com.baidu.hugegraph.backend.store.cassandra.CassandraTables$Vertex.init(CassandraTables.java:269)
at com.baidu.hugegraph.backend.store.cassandra.CassandraTables$Vertex.init(CassandraTables.java:248)
at com.baidu.hugegraph.backend.store.cassandra.CassandraStore.initTables(CassandraStore.java:398)
at com.baidu.hugegraph.backend.store.cassandra.CassandraStore.init(CassandraStore.java:248)
at com.baidu.hugegraph.backend.store.AbstractBackendStoreProvider.init(AbstractBackendStoreProvider.java:86)
at com.baidu.hugegraph.HugeGraph.initBackend(HugeGraph.java:189)
at com.baidu.hugegraph.cmd.InitStore.initBackend(InitStore.java:115)
at com.baidu.hugegraph.cmd.InitStore.initGraph(InitStore.java:103)
at com.baidu.hugegraph.cmd.InitStore.main(InitStore.java:86)
Caused by: com.datastax.driver.core.exceptions.InvalidQueryException: Index support is not enabled
at com.datastax.driver.core.Responses$Error.asException(Responses.java:148)
at com.datastax.driver.core.DefaultResultSetFuture.onSet(DefaultResultSetFuture.java:179)
at com.datastax.driver.core.RequestHandler.setFinalResult(RequestHandler.java:179)
at com.datastax.driver.core.RequestHandler.access$2400(RequestHandler.java:49)
at com.datastax.driver.core.RequestHandler$SpeculativeExecution.setFinalResult(RequestHandler.java:799)
at com.datastax.driver.core.RequestHandler$SpeculativeExecution.onSet(RequestHandler.java:633)
at com.datastax.driver.core.Connection$Dispatcher.channelRead0(Connection.java:1075)
at com.datastax.driver.core.Connection$Dispatcher.channelRead0(Connection.java:998)
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:336)
at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:336)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:336)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:336)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:343)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911)
at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:934)
at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:397)
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:302)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
at java.lang.Thread.run(Thread.java:748)
请问这个问题是怎样引起的呢？

Caused by: com.baidu.hugegraph.backend.BackendException: Table 'hugegraph+si' is not opened
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStdSessions.cf(RocksDBStdSessions.java:186)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStdSessions.access$000(RocksDBStdSessions.java:58)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStdSessions$StdSession.scan(RocksDBStdSessions.java:514)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBTable.queryById(RocksDBTable.java:147)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBTables$SecondaryIndex.queryByCond(RocksDBTables.java:179)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBTable.query(RocksDBTable.java:133)
at com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore.query(RocksDBStore.java:266)
at com.baidu.hugegraph.backend.tx.AbstractTransaction.query(AbstractTransaction.java:104)
at com.baidu.hugegraph.backend.tx.SchemaIndexTransaction.queryByName(SchemaIndexTransaction.java:96)
at com.baidu.hugegraph.backend.tx.SchemaIndexTransaction.query(SchemaIndexTransaction.java:75)
at com.baidu.hugegraph.backend.tx.SchemaTransaction.getSchema(SchemaTransaction.java:315)
at com.baidu.hugegraph.backend.cache.CachedSchemaTransaction.lambda$getSchema$3(CachedSchemaTransaction.java:192)
at com.baidu.hugegraph.backend.cache.CachedSchemaTransaction.getOrFetch(CachedSchemaTransaction.java:152)
at com.baidu.hugegraph.backend.cache.CachedSchemaTransaction.getSchema(CachedSchemaTransaction.java:191)
at com.baidu.hugegraph.backend.tx.SchemaTransaction.getPropertyKey(SchemaTransaction.java:105)
at com.baidu.hugegraph.HugeGraph.propertyKey(HugeGraph.java:312)
at com.baidu.hugegraph.traversal.optimize.TraversalUtil.convCompare2UserpropRelation(TraversalUtil.java:322)
at com.baidu.hugegraph.traversal.optimize.TraversalUtil.convCompare2Relation(TraversalUtil.java:274)
at com.baidu.hugegraph.traversal.optimize.TraversalUtil.convHas2Condition(TraversalUtil.java:192)
at com.baidu.hugegraph.traversal.optimize.TraversalUtil.fillConditionQuery(TraversalUtil.java:178)
at com.baidu.hugegraph.traversal.optimize.HugeGraphStep.vertices(HugeGraphStep.java:87)
at com.baidu.hugegraph.traversal.optimize.HugeGraphStep.lambda$new$0(HugeGraphStep.java:66)
at org.apache.tinkerpop.gremlin.process.traversal.step.map.GraphStep.processNextStart(GraphStep.java:139)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:50)
at org.apache.tinkerpop.gremlin.process.traversal.step.branch.RepeatStep.standardAlgorithm(RepeatStep.java:188)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.ComputerAwareStep.processNextStart(ComputerAwareStep.java:46)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.ExpandableStepIterator.next(ExpandableStepIterator.java:50)
at org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:36)
at org.apache.tinkerpop.gremlin.process.traversal.step.map.PathStep.processNextStart(PathStep.java:117)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:192)
at org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils.fill(IteratorUtils.java:62)
at org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils.list(IteratorUtils.java:85)
at org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils.asList(IteratorUtils.java:382)
at org.apache.tinkerpop.gremlin.server.handler.HttpGremlinEndpointHandler.lambda$channelRead$1(HttpGremlinEndpointHandler.java:239)
at org.apache.tinkerpop.gremlin.util.function.FunctionUtils.lambda$wrapFunction$0(FunctionUtils.java:36)
at org.apache.tinkerpop.gremlin.groovy.engine.GremlinExecutor.lambda$eval$2(GremlinExecutor.java:320)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at com.baidu.hugegraph.auth.HugeGraphAuthProxy$ContextTask.run(HugeGraphAuthProxy.java:278)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

hugegraph 什么架构 server可以在多台机器上启动吗？ 和janusgraph有什么区别

使用hugegraph-dist的jar包时，应该允许排除对hugegraph-api的依赖，但是RegisterUtil.java中强依赖了hugegraph-api的ServerOptions.java。

该问题似乎与#4问题类似，都属于failed to do request
但我按照建议方法在新建的干净项目中运行，仍未解决。。。

Expected behavior 期望表现

期望连接成功

Actual behavior 实际表现

实际抛出异常
Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy30.create(Unknown Source)
at myproject.myproject.SingleExample.main(SingleExample.java:26)
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.baidu.hugegraph.structure.schema.BuilderProxy.invoke(BuilderProxy.java:56)
... 2 more
Caused by: com.baidu.hugegraph.rest.ClientException: Failed to do request
at com.baidu.hugegraph.rest.RestClient.request(RestClient.java:69)
at com.baidu.hugegraph.rest.RestClient.post(RestClient.java:115)
at com.baidu.hugegraph.rest.RestClient.post(RestClient.java:79)
at com.baidu.hugegraph.rest.RestClient.post(RestClient.java:74)
at com.baidu.hugegraph.api.schema.PropertyKeyAPI.create(PropertyKeyAPI.java:43)
at com.baidu.hugegraph.driver.SchemaManager.addPropertyKey(SchemaManager.java:75)
at com.baidu.hugegraph.structure.schema.PropertyKey$BuilderImpl.create(PropertyKey.java:116)
at com.baidu.hugegraph.structure.schema.PropertyKey$BuilderImpl.create(PropertyKey.java:99)
... 7 more
Caused by: javax.ws.rs.ProcessingException: javax/xml/bind/annotation/XmlElement
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:261)
at org.glassfish.jersey.client.JerseyInvocation$1.call(JerseyInvocation.java:684)
at org.glassfish.jersey.client.JerseyInvocation$1.call(JerseyInvocation.java:681)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:444)
at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:681)
at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:437)
at org.glassfish.jersey.client.JerseyInvocation$Builder.post(JerseyInvocation.java:343)
at com.baidu.hugegraph.rest.RestClient.lambda$post$0(RestClient.java:116)
at com.baidu.hugegraph.rest.RestClient.request(RestClient.java:67)
... 14 more
Caused by: java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlElement
at com.fasterxml.jackson.module.jaxb.JaxbAnnotationIntrospector.(JaxbAnnotationIntrospector.java:139)
at com.fasterxml.jackson.module.jaxb.JaxbAnnotationIntrospector.(JaxbAnnotationIntrospector.java:126)
at com.fasterxml.jackson.module.jaxb.JaxbAnnotationIntrospector.(JaxbAnnotationIntrospector.java:118)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:488)
at java.base/java.lang.Class.newInstance(Class.java:560)
at com.fasterxml.jackson.jaxrs.json.JsonMapperConfigurator._resolveIntrospector(JsonMapperConfigurator.java:111)
at com.fasterxml.jackson.jaxrs.json.JsonMapperConfigurator._resolveIntrospectors(JsonMapperConfigurator.java:84)
at com.fasterxml.jackson.jaxrs.cfg.MapperConfiguratorBase._setAnnotations(MapperConfiguratorBase.java:120)
at com.fasterxml.jackson.jaxrs.json.JsonMapperConfigurator.getDefaultMapper(JsonMapperConfigurator.java:45)
at com.fasterxml.jackson.jaxrs.base.ProviderBase.locateMapper(ProviderBase.java:925)
at com.fasterxml.jackson.jaxrs.base.ProviderBase._endpointForWriting(ProviderBase.java:686)
at com.fasterxml.jackson.jaxrs.base.ProviderBase.writeTo(ProviderBase.java:558)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
at org.glassfish.jersey.spi.ContentEncoder.aroundWriteTo(ContentEncoder.java:138)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
at org.glassfish.jersey.client.ClientRequest.doWriteEntity(ClientRequest.java:517)
at org.glassfish.jersey.client.ClientRequest.writeEntity(ClientRequest.java:499)
at org.glassfish.jersey.client.internal.HttpUrlConnector._apply(HttpUrlConnector.java:393)
at org.glassfish.jersey.client.internal.HttpUrlConnector.apply(HttpUrlConnector.java:285)
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:252)
... 25 more
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlElement
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499)
... 51 more

Steps to reproduce the problem 复现步骤

1. 创建maven工程quickstart
2. 添加依赖
   3.对pom.xml进行maven install
   4.运行singleExample类

Status of loaded data 数据状态

Vertex/Edge summary 数据量

• loaded vertices amount: {like 10 million}
• loaded edges amount: {like 20 million}
• loaded time: {like 200s}

Vertex/Edge example 数据示例

{type something here...}

Schema(VertexLabel, EdgeLabel, IndexLabel) 元数据结构

{type something here...}

Specifications of environment 环境信息

• hugegraph version: 0.7.4 已启动，hugegraph-client：1.5.8
• operating system: ubuntu18.04
• hugegraph backend: RocksDB

###尝试了用memory方式启动
log如下

2018-08-08 02:24:53 1272  [main] [INFO ] com.baidu.hugegraph.dist.HugeGremlinServer [] - 
         \,,,/
         (o o)
-----oOOo-(3)-oOOo-----

2018-08-08 02:24:53 1494  [main] [INFO ] com.baidu.hugegraph.dist.HugeGremlinServer [] - Configuring Gremlin Server from conf/gremlin-server.yaml
2018-08-08 02:24:54 1987  [main] [INFO ] com.baidu.hugegraph.HugeGraph [] - Opening backend store 'memory' for graph 'hugegraph'
2018-08-08 02:24:54 2015  [main] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Graph [hugegraph] was successfully configured via [conf/hugegraph.properties].
2018-08-08 02:24:54 2015  [main] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Graph [hugegraph] was successfully configured via [conf/hugegraph.properties].
2018-08-08 02:24:54 2016  [main] [INFO ] org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor [] - Initialized Gremlin thread pool.  Threads in pool named with pattern gremlin-*
2018-08-08 02:24:54 2016  [main] [INFO ] org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor [] - Initialized Gremlin thread pool.  Threads in pool named with pattern gremlin-*
2018-08-08 02:24:56 3612  [main] [INFO ] org.apache.tinkerpop.gremlin.groovy.engine.ScriptEngines [] - Loaded gremlin-groovy ScriptEngine
2018-08-08 02:24:56 3612  [main] [INFO ] org.apache.tinkerpop.gremlin.groovy.engine.ScriptEngines [] - Loaded gremlin-groovy ScriptEngine
2018-08-08 02:24:57 4945  [main] [INFO ] org.apache.tinkerpop.gremlin.groovy.engine.GremlinExecutor [] - Initialized gremlin-groovy ScriptEngine with scripts/empty-sample.groovy
2018-08-08 02:24:57 4945  [main] [INFO ] org.apache.tinkerpop.gremlin.groovy.engine.GremlinExecutor [] - Initialized gremlin-groovy ScriptEngine with scripts/empty-sample.groovy
2018-08-08 02:24:57 4946  [main] [INFO ] org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor [] - Initialized GremlinExecutor and preparing GremlinScriptEngines instances.
2018-08-08 02:24:57 4946  [main] [INFO ] org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor [] - Initialized GremlinExecutor and preparing GremlinScriptEngines instances.
2018-08-08 02:24:57 5038  [main] [INFO ] org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor [] - Initialized gremlin-groovy GremlinScriptEngine and registered metrics
2018-08-08 02:24:57 5038  [main] [INFO ] org.apache.tinkerpop.gremlin.server.util.ServerGremlinExecutor [] - Initialized gremlin-groovy GremlinScriptEngine and registered metrics
2018-08-08 02:24:57 5052  [main] [INFO ] org.apache.tinkerpop.gremlin.server.util.MetricManager [] - Configured Metrics CsvReporter configured with report interval=180000ms to fileName=/tmp/gremlin-server-metrics.csv
2018-08-08 02:24:57 5052  [main] [INFO ] org.apache.tinkerpop.gremlin.server.util.MetricManager [] - Configured Metrics CsvReporter configured with report interval=180000ms to fileName=/tmp/gremlin-server-metrics.csv
2018-08-08 02:24:57 5149  [main] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Executing start up LifeCycleHook
2018-08-08 02:24:57 5149  [main] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Executing start up LifeCycleHook
2018-08-08 02:24:57 5196  [main] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Executed once at startup of Gremlin Server.
2018-08-08 02:24:57 5196  [main] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Executed once at startup of Gremlin Server.
2018-08-08 02:24:57 5390  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/vnd.gremlin-v1.0+gryo-lite with org.apache.tinkerpop.gremlin.driver.ser.GryoLiteMessageSerializerV1d0
2018-08-08 02:24:57 5390  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/vnd.gremlin-v1.0+gryo-lite with org.apache.tinkerpop.gremlin.driver.ser.GryoLiteMessageSerializerV1d0
2018-08-08 02:24:57 5391  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/vnd.gremlin-v1.0+gryo-stringd with org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV1d0
2018-08-08 02:24:57 5391  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/vnd.gremlin-v1.0+gryo-stringd with org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV1d0
2018-08-08 02:24:58 5828  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/vnd.gremlin-v1.0+json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerGremlinV1d0
2018-08-08 02:24:58 5828  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/vnd.gremlin-v1.0+json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerGremlinV1d0
2018-08-08 02:24:58 5969  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/vnd.gremlin-v2.0+json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerGremlinV2d0
2018-08-08 02:24:58 5969  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/vnd.gremlin-v2.0+json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerGremlinV2d0
2018-08-08 02:24:58 5976  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV1d0
2018-08-08 02:24:58 5976  [main] [INFO ] org.apache.tinkerpop.gremlin.server.AbstractChannelizer [] - Configured application/json with org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV1d0
2018-08-08 02:24:58 6139  [gremlin-server-boss-1] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Gremlin Server configured with worker thread pool of 1, gremlin pool of 1 and boss thread pool of 1.
2018-08-08 02:24:58 6139  [gremlin-server-boss-1] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Gremlin Server configured with worker thread pool of 1, gremlin pool of 1 and boss thread pool of 1.
2018-08-08 02:24:58 6140  [gremlin-server-boss-1] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Channel started at port 8182.
2018-08-08 02:24:58 6140  [gremlin-server-boss-1] [INFO ] org.apache.tinkerpop.gremlin.server.GremlinServer [] - Channel started at port 8182.
2018-08-08 02:24:58 6158  [main] [INFO ] com.baidu.hugegraph.server.RestServer [] - RestServer starting...
Aug 08, 2018 2:25:01 AM org.glassfish.grizzly.http.server.NetworkListener start
INFO: Started listener bound to [172.17.0.2:8080]
2018-08-08 02:25:01 9102  [main] [INFO ] com.baidu.hugegraph.server.RestServer [] - Graph 'hugegraph' was successfully configured via 'conf/hugegraph.properties'
2018-08-08 02:25:02 9674  [main] [ERROR] com.baidu.hugegraph.server.RestServer [] - The backend store of 'hugegraph' has not been initialized

貌似只是说后端存储初始化失败，memory方式不是不用初始化吗？？

###尝试用RocksDB方式启动
log如下

Initing HugeGraph Store...
2018-08-08 02:41:11 1166  [main] [INFO ] com.baidu.hugegraph.cmd.InitStore [] - Init graph with config file: conf/hugegraph.properties
2018-08-08 02:41:11 1333  [main] [INFO ] com.baidu.hugegraph.HugeGraph [] - Opening backend store 'rocksdb' for graph 'hugegraph'
2018-08-08 02:41:11 1410  [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Opening RocksDB with data path: /tmp/schema
2018-08-08 02:41:12 1715  [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Failed to open RocksDB '/tmp/schema' with database 'hugegraph', try to init CF later
2018-08-08 02:41:12 1788  [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Opening RocksDB with data path: /tmp/system
2018-08-08 02:41:12 1876  [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Failed to open RocksDB '/tmp/system' with database 'hugegraph', try to init CF later
2018-08-08 02:41:12 1888  [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Opening RocksDB with data path: /tmp/graph
2018-08-08 02:41:12 1902  [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Failed to open RocksDB '/tmp/graph' with database 'hugegraph', try to init CF later
2018-08-08 02:41:12 1966  [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Store initialized: schema
2018-08-08 02:41:12 2000  [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Store initialized: system
2018-08-08 02:41:12 2036  [main] [INFO ] com.baidu.hugegraph.backend.store.rocksdb.RocksDBStore [] - Store initialized: graph
2018-08-08 02:41:12 2293  [pool-3-thread-1] [INFO ] com.baidu.hugegraph.backend.Transaction [] - Clear cache on event 'store.init'

rocksdb要写的目录我放在tmp目录，应该不会没有权限

然后，我同样的方式在虚拟机中是可以启动的2333333

Expected behavior 期望表现

图综合性能测试-CW 是怎么实现的,是rest api吗

Actual behavior 实际表现

{type something here...}

Steps to reproduce the problem 复现步骤

1. {step 1}
2. {step 2}
3. {step 3}

Status of loaded data 数据状态

Vertex/Edge summary 数据量

• loaded vertices amount: {like 10 million}
• loaded edges amount: {like 20 million}
• loaded time: {like 200s}

Vertex/Edge example 数据示例

{type something here...}

Schema(VertexLabel, EdgeLabel, IndexLabel) 元数据结构

{type something here...}

Specifications of environment 环境信息

• hugegraph version: {like v0.7.4}
• operating system: {like centos 7.4, 32 CPUs, 64G RAM}
• hugegraph backend: {like cassandra 3.10, cluster with 20 nodes, 3 x 1TB HDD disk each node}

描述：从一个已知节点出发，向外（out）遍历，直至不存在叶子节点为止
语句：g.V().hasId("xxx").repeat(out("look")).until(outE("look").count().is(0)).path()
数据：3000多条边+3000多个顶点； 上述语句执行花了12s+ 请问什么原因 可否优化

请问各位大佬，hugegraph-studio可以加入administration机制吗？通过账号登录进入。

请问在那里可以下载最新hugestudio7

从一点出发到达目标顶点会经过多个边与多个顶点，如何根据边的时间属性排序 ，获取边最早建立的路径

千万级别的点数据,以hbase作为存储,使用 g.V().count()查询会报超时,改了超时配置之后还是会报hbase相关的错误
java.io.InterruptedIOException: null
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:214) ~[hbase-client-2.0.0.jar:2.0.0]
at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:58) ~[hbase-client-2.0.0.jar:2.0.0]
at org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithoutRetries(RpcRetryingCallerImpl.java:192) ~[hbase-client-2.0.0.jar:2.0.0]
at org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:269) ~[hbase-client-2.0.0.jar:2.0.0]
at org.apache.hadoop.hbase.client.ClientScanner.loadCache(ClientScanner.java:437) ~[hbase-client-2.0.0.jar:2.0.0]
at org.apache.hadoop.hbase.client.ClientScanner.nextWithSyncCache(ClientScanner.java:312) ~[hbase-client-2.0.0.jar:2.0.0]
at org.apache.hadoop.hbase.client.ClientScanner.next(ClientScanner.java:597) ~[hbase-client-2.0.0.jar:2.0.0]
at org.apache.hadoop.hbase.client.ResultScanner$1.hasNext(ResultScanner.java:53) ~[hbase-client-2.0.0.jar:2.0.0]
at com.baidu.hugegraph.backend.store.hbase.HbaseSessions$RowIterator.hasNext(HbaseSessions.java:474) ~[hugegraph-hbase-0.7.4.jar:?]
at com.baidu.hugegraph.backend.serializer.BinaryEntryIterator.fetch(BinaryEntryIterator.java:71) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.store.BackendEntryIterator.hasNext(BackendEntryIterator.java:55) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.iterator.ExtendableIterator.fetch(ExtendableIterator.java:89) ~[hugegraph-common-1.4.9.jar:1.4.9.0]
at com.baidu.hugegraph.iterator.WrappedIterator.hasNext(WrappedIterator.java:41) ~[hugegraph-common-1.4.9.jar:1.4.9.0]
at com.baidu.hugegraph.iterator.MapperIterator.fetch(MapperIterator.java:42) ~[hugegraph-common-1.4.9.jar:1.4.9.0]
at com.baidu.hugegraph.iterator.WrappedIterator.hasNext(WrappedIterator.java:41) ~[hugegraph-common-1.4.9.jar:1.4.9.0]
at com.baidu.hugegraph.iterator.FilterIterator.fetch(FilterIterator.java:42) ~[hugegraph-common-1.4.9.jar:1.4.9.0]

用一键部署方案，启动报错。Failed to start HugeGraphServer, requires at least 512m free memory
已在多台机器上测试，机器剩余内存分别为180G，50G，4G。系统环境为Centos6.7。

本地启动了hugegraph使用下面链接的demo执行 , 新建schema时报错 :
https://hugegraph.github.io/hugegraph-doc//quickstart/hugegraph-client.html

schema.propertyKey("name").asText().ifNotExist().create();

Caused by: com.baidu.hugegraph.exception.ServerException: The name of property key can't be null

逐一排查项目依赖 , 发现去掉对fastjson的依赖 , 或强制指定fastjson的依赖为1.1.x , 可以解决此问题 ;

我使用的hugegraph版本:
client : 1.5.8
server : 0.7.4

复现此问题的方法 :
在上面demo项目里面加上对 fastjson 1.2.x 的依赖 : com.alibaba:fastjson:1.2.44

场景：先导入数据，131w左右；发现有些列需要查询，然后创建索引。
版本：hugegraph-0.7.4 + rocksDB
异常栈：
2018-08-27 11:37:29 3702792 [pool-5-thread-1] [WARN ] com.baidu.hugegraph.task.HugeTask [] - An exception occurred when running task: 1
com.baidu.hugegraph.exception.LimitExceedException: Too many records(must <=800000) for the query: Query for VERTEX offset=0, limit=9223372036854775807, order by {} where id in [2:"Doe"!"Anna"!""!"Other"!1/1/1963, 2:"Lam"!"Thi"!""!"Green"!1/11/1956, 2:"Bond"!"Tina"!""!"Green"!3/3/1969, 2:"Guy"!"Alex"!""!"Green"!2/27/1985, 2:"Bean"!"Eric"!"A"!"Green"!7/1...
at com.baidu.hugegraph.backend.query.Query.checkCapacity(Query.java:203) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.query.IdQuery.query(IdQuery.java:76) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.query.IdQuery.query(IdQuery.java:82) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.query.IdQuery.(IdQuery.java:61) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.tx.GraphIndexTransaction.query(GraphIndexTransaction.java:360) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.tx.GraphTransaction.optimizeQuery(GraphTransaction.java:961) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.tx.GraphTransaction.query(GraphTransaction.java:292) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.tx.GraphTransaction.queryVerticesFromBackend(GraphTransaction.java:452) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.tx.GraphTransaction.queryVertices(GraphTransaction.java:443) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.cache.CachedGraphTransaction.queryVertices(CachedGraphTransaction.java:93) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.tx.GraphIndexTransaction.rebuildIndex(GraphIndexTransaction.java:1109) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.tx.GraphIndexTransaction.rebuildIndex(GraphIndexTransaction.java:1047) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.backend.tx.GraphTransaction.rebuildIndex(GraphTransaction.java:1237) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.job.schema.RebuildIndexCallable.runTask(RebuildIndexCallable.java:36) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at com.baidu.hugegraph.job.schema.SchemaCallable.call(SchemaCallable.java:18) ~[hugegraph-core-0.7.4.jar:0.7.4.0]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_181]
at com.baidu.hugegraph.task.HugeTask.run(HugeTask.java:198) [hugegraph-core-0.7.4.jar:0.7.4.0]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_181]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_181]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_181]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_181]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]

There are several reasons for affecting the tinkerpop test speed:

1. rocksdb clear-schema would delete index-label too many times due to need to scan prefix
2. clear schema even if the database is empty
3. clear variables even if it's empty, and it will init variables schema at the same time if not exist
4. init and clear basic schema when load non basic graph

yum install -y redhat-lsb