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https://issues.apache.org/jira/browse/FLINK-4999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Yu resolved FLINK-4999.
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Resolution: Won't Fix
> Improve accuracy of SingleInputGate#getNumberOfQueuedBuffers
> ------------------------------------------------------------
>
> Key: FLINK-4999
> URL: https://issues.apache.org/jira/browse/FLINK-4999
> Project: Flink
> Issue Type: Bug
> Reporter: Ted Yu
> Priority: Minor
>
> {code}
> // re-try 3 times, if fails, return 0 for "unknown"
> for (int retry = 0; retry < 3; retry++) {
> ...
> catch (Exception ignored) {}
> {code}
> There is no synchronization around accessing inputChannels currently.
> Therefore the method expects potential exception.
> Upon the 3rd try, synchronization should be taken w.r.t. inputChannels so
> that the return value is accurate.
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