You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "Zebing Lin (Jira)" <ji...@apache.org> on 2020/01/15 20:54:00 UTC
[jira] [Comment Edited] (SPARK-28403) Executor Allocation Manager
can add an extra executor when speculative tasks
[ https://issues.apache.org/jira/browse/SPARK-28403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17016316#comment-17016316 ]
Zebing Lin edited comment on SPARK-28403 at 1/15/20 8:53 PM:
-------------------------------------------------------------
In our production, this just caused a fluctuation of requested executors:
{code:java}
Total executors: Running = 6, Needed = 6, Requested = 6
Lowering target number of executors to 5 (previously 6) because not all requested executors are actually needed
Total executors: Running = 6, Needed = 5, Requested = 6
Lowering target number of executors to 5 (previously 6) because not all requested executors are actually needed
Total executors: Running = 6, Needed = 5, Requested = 6
{code}
I think this logic can be deleted.
was (Author: zebingl):
In our production, this just caused a fluctuation of requested executors:
{code:java}
Total executors: Running = 6, Needed = 6, Requested = 6
Lowering target number of executors to 5 (previously 6) because not all requested executors are actually needed
Total executors: Running = 6, Needed = 5, Requested = 6
Total executors: Running = 6, Needed = 6, Requested = 6
Lowering target number of executors to 5 (previously 6) because not all requested executors are actually needed
Total executors: Running = 6, Needed = 5, Requested = 6
{code}
I think this logic can be deleted.
> Executor Allocation Manager can add an extra executor when speculative tasks
> ----------------------------------------------------------------------------
>
> Key: SPARK-28403
> URL: https://issues.apache.org/jira/browse/SPARK-28403
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.3.0
> Reporter: Thomas Graves
> Priority: Major
>
> It looks like SPARK-19326 added a bug in the execuctor allocation maanger where it adds an extra executor when it shouldn't when we have pending speculative tasks but the target number didn't change. [https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/ExecutorAllocationManager.scala#L377]
> It doesn't look like this is necessary since it already added in the pendingSpeculative tasks.
> See the questioning of this on the PR at:
> https://github.com/apache/spark/pull/18492/files#diff-b096353602813e47074ace09a3890d56R379
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org