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From "MIN-FU YANG (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (SPARK-22876) spark.yarn.am.attemptFailuresValidityInterval does not work correctly
Date Sat, 24 Mar 2018 03:01:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-22876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16412379#comment-16412379
] 

MIN-FU YANG edited comment on SPARK-22876 at 3/24/18 3:00 AM:
--------------------------------------------------------------

I found that current Yarn implementation doesn't expose the number of failed app attempts
in their API, maybe thisĀ feature should be pending until they expose this number.


was (Author: lucasmf):
I found that current Yarn implementation doesn't expose number of failed app attempts number
in their API, maybe thisĀ feature should be pending until they expose this number.

> spark.yarn.am.attemptFailuresValidityInterval does not work correctly
> ---------------------------------------------------------------------
>
>                 Key: SPARK-22876
>                 URL: https://issues.apache.org/jira/browse/SPARK-22876
>             Project: Spark
>          Issue Type: Bug
>          Components: YARN
>    Affects Versions: 2.2.0
>         Environment: hadoop version 2.7.3
>            Reporter: Jinhan Zhong
>            Priority: Minor
>
> I assume we can use spark.yarn.maxAppAttempts together with spark.yarn.am.attemptFailuresValidityInterval
to make a long running application avoid stopping  after acceptable number of failures.
> But after testing, I found that the application always stops after failing n times (
n is minimum value of spark.yarn.maxAppAttempts and yarn.resourcemanager.am.max-attempts from
client yarn-site.xml)
> for example, following setup will allow the application master to fail 20 times.
> * spark.yarn.am.attemptFailuresValidityInterval=1s
> * spark.yarn.maxAppAttempts=20
> * yarn client: yarn.resourcemanager.am.max-attempts=20
> * yarn resource manager: yarn.resourcemanager.am.max-attempts=3
> And after checking the source code, I found in source file ApplicationMaster.scala https://github.com/apache/spark/blob/master/resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ApplicationMaster.scala#L293
> there's a ShutdownHook that checks the attempt id against the maxAppAttempts, if attempt
id >= maxAppAttempts, it will try to unregister the application and the application will
finish.
> is this a expected design or a bug?



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