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https://issues.apache.org/jira/browse/FLINK-20108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jiangjie Qin reassigned FLINK-20108:
------------------------------------
Assignee: Jiangjie Qin
> SingleThreadFetcherManager may add splits to a shutting down SplitFetcher
> -------------------------------------------------------------------------
>
> Key: FLINK-20108
> URL: https://issues.apache.org/jira/browse/FLINK-20108
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Common
> Affects Versions: 1.11.2
> Reporter: Jiangjie Qin
> Assignee: Jiangjie Qin
> Priority: Major
>
> Currently the split fetchers are only removed from the
> {{SplitFetcherManager.fetchers}} when the thread exit. The may cause problem
> because when {{SplitFetcherManager.addSplits()}} is called, it may see a
> shutting down split fetcher and adds splits to it. These splits will then
> just be lost.
> The fix is to make {{SplitFetcherManager.fetchers}} field private and
> introduce a protected {{addSplitsToFetcher(Splits, fetcherId)}} method. That
> method will ensure the splits won't be assigned to a shutting down split
> fetcher instead of a new fetcher.
>
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