[Tests] Fix thread leak in MLTransactionMetadataStore - #14524
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lhotari
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michaeljmarshall
March 1, 2022 21:35
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@lordcheng10 Could this help in reducing memory consumption of branch-2.10 (v2.10.0-candidate-2) & master branch version? |
liangyepianzhou
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lhotari
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March 2, 2022 06:30
- MLTransactionMetadataStore.internalPinnedExecutor wasn't closed when MLTransactionMetadataStore.closeAsync was called - problem was introduced by apache#14238 changes - this issue causes tests to fail with OOME. Most likely this also impacts production code.
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btw. The thread leak is visible also in test output. #10195 added https://github.com/apache/pulsar/blob/master/buildtools/src/main/java/org/apache/pulsar/tests/ThreadLeakDetectorListener.java which logs threads that are active when the test ends. For example, when running this can be seen in the console: |
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@codelipenghui Is the thread leak a blocker for 2.10 release? |
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@lhotari Yes, this should be a blocker for 2.10.0 release, will cherry-pick this PR and start a new VOTE for 2.10.0 |
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- MLTransactionMetadataStore.internalPinnedExecutor wasn't closed when MLTransactionMetadataStore.closeAsync was called - problem was introduced by #14238 changes - this issue causes tests to fail with OOME. Most likely this also impacts production code. * Close TransactionMetadataStoreService after the broker service has been closed (cherry picked from commit 0ddec86)
michaeljmarshall
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- MLTransactionMetadataStore.internalPinnedExecutor wasn't closed when MLTransactionMetadataStore.closeAsync was called - problem was introduced by #14238 changes - this issue causes tests to fail with OOME. Most likely this also impacts production code. * Close TransactionMetadataStoreService after the broker service has been closed (cherry picked from commit 0ddec86)
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- MLTransactionMetadataStore.internalPinnedExecutor wasn't closed when MLTransactionMetadataStore.closeAsync was called - problem was introduced by apache#14238 changes - this issue causes tests to fail with OOME. Most likely this also impacts production code. * Close TransactionMetadataStoreService after the broker service has been closed
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Motivation
MLTransactionMetadataStore.internalPinnedExecutor wasn't closed
when MLTransactionMetadataStore.closeAsync was called
this issue causes tests to fail with OOME. This might also impact
production code in some way.
example OOME in tests
Modifications
MoreExecutors.shutdownAndAwaitTerminationto handle ExecutorService shutdown since it handles shutdown in a proper way gracefully although in this case it seems that it would be fine to terminate forcefully by calling shutdownNow