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Posted to issues@spark.apache.org by "Sandy Ryza (JIRA)" <ji...@apache.org> on 2015/03/10 19:16:38 UTC
[jira] [Resolved] (SPARK-4921) TaskSetManager mistakenly returns
PROCESS_LOCAL for NO_PREF tasks
[ https://issues.apache.org/jira/browse/SPARK-4921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sandy Ryza resolved SPARK-4921.
-------------------------------
Resolution: Won't Fix
> TaskSetManager mistakenly returns PROCESS_LOCAL for NO_PREF tasks
> -----------------------------------------------------------------
>
> Key: SPARK-4921
> URL: https://issues.apache.org/jira/browse/SPARK-4921
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.0
> Reporter: Xuefu Zhang
> Attachments: NO_PREF.patch
>
>
> During research for HIVE-9153, we found that TaskSetManager returns PROCESS_LOCAL for NO_PREF tasks, which may caused performance degradation. Changing the return value to NO_PREF, as demonstrated in the attached patch, seemingly improves the performance.
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