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Posted to issues@spark.apache.org by "Ryan Williams (JIRA)" <ji...@apache.org> on 2015/07/20 18:12:05 UTC

[jira] [Updated] (SPARK-9197) Cached RDD partitions are lost when executors are dynamically deallocated

     [ https://issues.apache.org/jira/browse/SPARK-9197?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ryan Williams updated SPARK-9197:
---------------------------------
    Priority: Minor  (was: Major)

> Cached RDD partitions are lost when executors are dynamically deallocated
> -------------------------------------------------------------------------
>
>                 Key: SPARK-9197
>                 URL: https://issues.apache.org/jira/browse/SPARK-9197
>             Project: Spark
>          Issue Type: Bug
>          Components: YARN
>    Affects Versions: 1.4.1
>            Reporter: Ryan Williams
>            Priority: Minor
>
> Currently, dynamic allocation cleans up executors that have not run any tasks for a certain amount of time.
> However, this often leads to cached RDD partitions being lost.
> Should dynamic allocation leave executors alone that have cached partitions? Should this be configurable?
> Is there any interest in code that would shuffle cached partitions around in preparation for executor-deallocation, to avoid this? Such logic could be useful in general for maintaining persisted RDDs across executor churn.



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