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https://issues.apache.org/jira/browse/FLINK-2531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14698588#comment-14698588
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ASF GitHub Bot commented on FLINK-2531:
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Github user Rucongzhang commented on the pull request:
https://github.com/apache/flink/pull/1023#issuecomment-131504171
@chiwanpark , you are right. isFullyAcknowledged() must be called after
calling function acknowledgeTask.
> combining the "if" branch to improve the performance
> ----------------------------------------------------
>
> Key: FLINK-2531
> URL: https://issues.apache.org/jira/browse/FLINK-2531
> Project: Flink
> Issue Type: Bug
> Reporter: zhangrucong
> Priority: Minor
>
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