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https://issues.apache.org/jira/browse/FLINK-8687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16388890#comment-16388890
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mingleizhang commented on FLINK-8687:
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Thanks [~yuzhih...@gmail.com] , actually, I do not know the multi-thread
scenario either, I just use GUESS, or MIGHT be, as there is a {{resultLock}}.
So, I think there will be many {{write}} multi-thread, in this issue, it is
{{updatePage}}. I even did not know that the class or method in gateway package
will encounter multi-thread accessing. Hmm....
> MaterializedCollectStreamResult#retrievePage should take resultLock
> -------------------------------------------------------------------
>
> Key: FLINK-8687
> URL: https://issues.apache.org/jira/browse/FLINK-8687
> Project: Flink
> Issue Type: Bug
> Reporter: Ted Yu
> Assignee: mingleizhang
> Priority: Major
>
> Currently MaterializedCollectStreamResult#retrievePage checks page range and
> calls snapshot.subList() without holding resultLock.
> {{resultLock}} should be taken.
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