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https://issues.apache.org/jira/browse/SPARK-3101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14100755#comment-14100755
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Apache Spark commented on SPARK-3101:
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User 'sarutak' has created a pull request for this issue:
https://github.com/apache/spark/pull/2016
> Flag variable in ApplicationMaster should be declared as volatile
> -----------------------------------------------------------------
>
> Key: SPARK-3101
> URL: https://issues.apache.org/jira/browse/SPARK-3101
> Project: Spark
> Issue Type: Bug
> Components: YARN
> Affects Versions: 1.1.0
> Reporter: Kousuke Saruta
>
> In ApplicationMaster, a field variable 'isLastAMRetry' is used as a flag but
> it's not declared as volatile though it's used from multiple threads.
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