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https://issues.apache.org/jira/browse/KAFKA-7743?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16733850#comment-16733850
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Sarvesh Tamba edited comment on KAFKA-7743 at 1/4/19 2:00 PM:
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[~guozhang] how to make sure if parallel threads > 1? Also what
fields/configuration files need to be changed if parallel threads not already
>1 ? TIA. :)
was (Author: stamba):
[~guozhang] how to check if parallel threads > 1? TIA. :)
> "pure virtual method called" error message thrown for unit tests which PASS
> ---------------------------------------------------------------------------
>
> Key: KAFKA-7743
> URL: https://issues.apache.org/jira/browse/KAFKA-7743
> Project: Kafka
> Issue Type: Bug
> Components: streams, unit tests
> Affects Versions: 2.0.0, 2.0.1, 2.1.0
> Reporter: Sarvesh Tamba
> Priority: Critical
>
> Observing the following messages intermittently for a few random unit tests,
> though the status for each of them is PASSED:-
> *"pure virtual method called*
> *terminate called without an active exception"*
> Some of the unit tests throwing above messages are, besides others:-
> org.apache.kafka.streams.kstream.internals.KTableImplTest >
> shouldThrowNullPointerOnTransformValuesWithKeyWhenMaterializedIsNull PASSED
> org.apache.kafka.streams.processor.internals.GlobalStreamThreadTest >
> shouldThrowStreamsExceptionOnStartupIfThereIsAStreamsException PASSED
> org.apache.kafka.streams.state.internals.CachingSessionStoreTest >
> shouldNotForwardChangedValuesDuringFlushWhenSendOldValuesDisabled PASSED
> org.apache.kafka.streams.processor.internals.StoreChangelogReaderTest >
> shouldCompleteImmediatelyWhenEndOffsetIs0 PASSED
> org.apache.kafka.streams.kstream.internals.KStreamKStreamJoinTest > testJoin
> PASSED
> org.apache.kafka.streams.kstream.internals.KTableFilterTest >
> testTypeVariance PASSED
> org.apache.kafka.streams.kstream.internals.KTableKTableInnerJoinTest >
> testNotSendingOldValues PASSED
> org.apache.kafka.streams.processor.internals.GlobalStreamThreadTest >
> shouldThrowStreamsExceptionOnStartupIfThereIsAStreamsException PASSED
> org.apache.kafka.streams.processor.DefaultPartitionGrouperTest >
> shouldComputeGroupingForTwoGroups PASSED
> org.apache.kafka.streams.state.internals.RocksDBWindowStoreTest >
> shouldFetchAndIterateOverExactKeys PASSED
> org.apache.kafka.streams.state.internals.FilteredCacheIteratorTest >
> shouldFilterEntriesNotMatchingHasNextCondition PASSED
> org.apache.kafka.streams.state.internals.GlobalStateStoreProviderTest >
> shouldThrowExceptionIfStoreIsntOpen PASSED
> This probably causes the 'gradle unitTest' command to fail during cleanup
> time with final status as FAILED and the following message:-
> "Process 'Gradle Test Executor 16' finished with non-zero exit value 134"
> This intermittent/random error is not seen when final unit test suite status
> is "BUILD SUCCESSFUL".
> Reproducing "pure virtual method" issue is extremely hard, since it happens
> intermittently and for any random unit test(not the same unit test will fail
> next time). The ones noted above were some of the failing unit tests
> observed. Note that the status next to the test shows PASSED(is this correct
> or misleading?).
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