Repartitioner partitions a RDD and define how it gets spread out over a cluster.

By default the behavior of repartitioning is similar to coalesce in which case, you decrease number of partition of RDD without shuffling data over the network. You can use this plugin to reduce or increase partitions of an RDD. If you are decreasing partition it's a good practise not to shuffle the data -- in doing so, it will keep the data on the number of nodes and pull in the remaining data from other nodes.

If you are using this plugin to increase the partitions it's a good practise to shuffle the data, there is a cost associated with shuffling, but evening out data over the partitions helps improve the performance.

Clone the this repo to your local environment

  git clone https://github.com/hydrator/repartitioner.git repartitioner

Clone the this repo to your local environment

  git clone https://github.com/hydrator/repartitioner.git repartitioner

To build your plugins:

mvn clean package -DskipTests

The build will create a .jar and .json file under the target directory. These files can be used to deploy your plugins.

You can deploy your plugins using the CDAP CLI:

> load artifact <target/repartitioner-<version>.jar> config-file <target/repartitioner-<version>.json>

For example, if your artifact is named 'repartitioner-:

> load artifact target/repartitioner-<version>.jar config-file target/repartitioner-<version>.json

CDAP User Group and Development Discussions:

• [email protected] <https://groups.google.com/d/forum/cdap-user>__

The cdap-user mailing list is primarily for users using the product to develop applications or building plugins for appplications. You can expect questions from users, release announcements, and any other discussions that we think will be helpful to the users.

Copyright © 2016-2017 Cask Data, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Cask is a trademark of Cask Data, Inc. All rights reserved.

Apache, Apache HBase, and HBase are trademarks of The Apache Software Foundation. Used with permission. No endorsement by The Apache Software Foundation is implied by the use of these marks.

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