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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-22900) remove unnecessary restrict for streaming dynamic allocation
Date Fri, 11 May 2018 15:38:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-22900?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen resolved SPARK-22900.
-------------------------------
    Resolution: Not A Problem

> remove unnecessary restrict for streaming dynamic allocation
> ------------------------------------------------------------
>
>                 Key: SPARK-22900
>                 URL: https://issues.apache.org/jira/browse/SPARK-22900
>             Project: Spark
>          Issue Type: Improvement
>          Components: DStreams
>    Affects Versions: 2.3.0
>            Reporter: sharkd tu
>            Priority: Major
>
> When i set the conf `spark.streaming.dynamicAllocation.enabled=true`, the conf `num-executors`
can not be set. As a result, it will allocate default 2 executors and all receivers will be
run on this 2 executors, there may not be redundant cpu cores for tasks. it will stuck all
the time.
> in my opinion, we should remove unnecessary restrict for streaming dynamic allocation.
we can set `num-executors` and `spark.streaming.dynamicAllocation.enabled=true` together.
when application starts, each receiver will be run on an executor.



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