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bigdata-helm-charts's Issues

Bug: Spark on Kubernetes (Standalone mode) => 2.3.0 trying to connect to master using its master's pod name and throws "java.net.UnknownHostException"

Spark 2.2.2 and lower works fine on k8s(Standalone mode), but 2.3.0 and up throws "java.net.UnknownHostException"

18/07/15 01:05:51 WARN TransportClientFactory: DNS resolution for spark-master-controller-8xlkx:42615 took 8403 ms
Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1707)
	at org.apache.spark.deploy.SparkHadoopUtil.runAsSparkUser(SparkHadoopUtil.scala:64)
	at org.apache.spark.executor.CoarseGrainedExecutorBackend$.run(CoarseGrainedExecutorBackend.scala:188)
	at org.apache.spark.executor.CoarseGrainedExecutorBackend$.main(CoarseGrainedExecutorBackend.scala:293)
	at org.apache.spark.executor.CoarseGrainedExecutorBackend.main(CoarseGrainedExecutorBackend.scala)
Caused by: org.apache.spark.SparkException: Exception thrown in awaitResult: 
	at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205)
	at org.apache.spark.rpc.RpcTimeout.awaitResult(RpcTimeout.scala:75)
	at org.apache.spark.rpc.RpcEnv.setupEndpointRefByURI(RpcEnv.scala:101)
	at org.apache.spark.executor.CoarseGrainedExecutorBackend$$anonfun$run$1.apply$mcV$sp(CoarseGrainedExecutorBackend.scala:201)
	at org.apache.spark.deploy.SparkHadoopUtil$$anon$2.run(SparkHadoopUtil.scala:65)
	at org.apache.spark.deploy.SparkHadoopUtil$$anon$2.run(SparkHadoopUtil.scala:64)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692)
	... 4 more
Caused by: java.io.IOException: Failed to connect to spark-master-controller-8xlkx:42615
	at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:245)
	at org.apache.spark.network.client.TransportClientFactory.createClient(TransportClientFactory.java:187)
	at org.apache.spark.rpc.netty.NettyRpcEnv.createClient(NettyRpcEnv.scala:198)
	at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:194)
	at org.apache.spark.rpc.netty.Outbox$$anon$1.call(Outbox.scala:190)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnknownHostException: spark-master-controller-8xlkx
	at java.net.InetAddress.getAllByName0(InetAddress.java:1280)
	at java.net.InetAddress.getAllByName(InetAddress.java:1192)
	at java.net.InetAddress.getAllByName(InetAddress.java:1126)
	at java.net.InetAddress.getByName(InetAddress.java:1076)
	at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:146)
	at io.netty.util.internal.SocketUtils$8.run(SocketUtils.java:143)
	at java.security.AccessController.doPrivileged(Native Method)
	at io.netty.util.internal.SocketUtils.addressByName(SocketUtils.java:143)
	at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:43)
	at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:63)
	at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:55)
	at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:57)
	at io.netty.resolver.InetSocketAddressResolver.doResolve(InetSocketAddressResolver.java:32)
	at io.netty.resolver.AbstractAddressResolver.resolve(AbstractAddressResolver.java:108)
	at io.netty.bootstrap.Bootstrap.doResolveAndConnect0(Bootstrap.java:208)
	at io.netty.bootstrap.Bootstrap.access$000(Bootstrap.java:49)
	at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:188)
	at io.netty.bootstrap.Bootstrap$1.operationComplete(Bootstrap.java:174)
	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:507)
	at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:481)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:420)
	at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)

Create Helm chart for Alluxio

Create Helm chart for Alluxio, should include following templates:

  1. PersistentVolume
  2. Master
  3. Worker
  4. External dashboard

Alluxio fails to provide AWS credentials as Java system properties

Java system properties–aws.accessKeyId and aws.secretKey.
Order should look like this:

  1. Environment variables
  2. Java system properties
    Java system properties–aws.accessKeyId and aws.secretKey. The AWS SDK for Java uses the SystemPropertiesCredentialsProvider to load these credentials.
  3. The default credential profiles file
  4. etc.
    You can read more here

Upgrade helm charts that uses "nodeSelector" spec

nodeSelector continues to work as usual, but will eventually be deprecated, as node affinity can express everything that nodeSelector can express.

Affinity features compare to nodeSelector

  1. the language is more expressive (not just “AND of exact match”)
  2. you can indicate that the rule is “soft”/“preference” rather than a hard requirement, so if the scheduler can’t satisfy it, the pod will still be scheduled
  3. you can constrain against labels on other pods running on the node (or other topological domain), rather than against labels on the node itself, which allows rules about which pods can and cannot be co-located read more

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