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Huang Xingbo commented on FLINK-20654: -------------------------------------- https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=11145&view=logs&j=5c8e7682-d68f-54d1-16a2-a09310218a49&t=f508e270-48d6-5f1e-3138-42a17e0714f0 > Unaligned checkpoint recovery may lead to corrupted data stream > --------------------------------------------------------------- > > Key: FLINK-20654 > URL: https://issues.apache.org/jira/browse/FLINK-20654 > Project: Flink > Issue Type: Bug > Components: Runtime / Checkpointing > Affects Versions: 1.12.0 > Reporter: Arvid Heise > Assignee: Roman Khachatryan > Priority: Blocker > Labels: pull-request-available > Fix For: 1.13.0, 1.12.1 > > > Fix of FLINK-20433 shows potential corruption after recovery for all > variations of UnalignedCheckpointITCase. > To reproduce, run UCITCase a couple hundreds times. The issue showed for me > in: > - execute [Parallel union, p = 5] > - execute [Parallel union, p = 10] > - execute [Parallel cogroup, p = 5] > - execute [parallel pipeline with remote channels, p = 5] > with decreasing frequency. > The issue manifests as one of the following issues: > - stream corrupted exception > - EOF exception > - assertion failure in NUM_LOST or NUM_OUT_OF_ORDER > - (for union) ArithmeticException overflow (because the number that should be > [0;100000] has been mis-deserialized) -- This message was sent by Atlassian Jira (v8.3.4#803005)