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Arvid Heise commented on FLINK-21992: ------------------------------------- Merged into master as 7c3abe11a28d54a585985ef908f36d8cf5857e14. > Fix availability notification in UnionInputGate > ----------------------------------------------- > > Key: FLINK-21992 > URL: https://issues.apache.org/jira/browse/FLINK-21992 > Project: Flink > Issue Type: Bug > Components: Runtime / Checkpointing > Affects Versions: 1.12.2, 1.13.0 > Reporter: Arvid Heise > Assignee: Arvid Heise > Priority: Blocker > Labels: pull-request-available > Fix For: 1.13.0, 1.12.3 > > > A user on mailing list reported that his job gets stuck with unaligned > checkpoint enabled. > http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Source-Operators-Stuck-in-the-requestBufferBuilderBlocking-tt42530.html > We received two similar reports in the past, but the users didn't follow up, > so it was not as easy to diagnose as this time where the initial report > already contains many relevant data points. > Beside a buffer leak, there could also be an issue with priority notification. -- This message was sent by Atlassian Jira (v8.3.4#803005)