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https://issues.apache.org/jira/browse/FLINK-19377?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Piotr Nowojski updated FLINK-19377:
-----------------------------------
Component/s: (was: Runtime / Task)
(was: Runtime / State Backends)
API / DataStream
> Task can swallow test exceptions which hides test failures
> ----------------------------------------------------------
>
> Key: FLINK-19377
> URL: https://issues.apache.org/jira/browse/FLINK-19377
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream, Tests
> Affects Versions: 1.8.3, 1.9.3, 1.10.2, 1.11.2
> Reporter: Aljoscha Krettek
> Priority: Blocker
> Fix For: 1.12.0, 1.11.3
>
>
> I noticed this while debugging {{EventTimeWindowCheckpointingITCase}}. If you
> change {{testSlidingWindows()}} to use a tumbling window instead of the
> sliding window the test should fail. Interestingly, the tests only fail when
> using the RocksDB backend but not for the heap-based backends.
> You can follow the flow by setting a breakpoint on the {{AssertionError}}
> being thrown in {{ValidatingSink}}. Somewhere in the Task innards it will be
> suppressed/swallowed and the test will succeed.
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