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https://issues.apache.org/jira/browse/RATIS-2104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17852907#comment-17852907
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Duong commented on RATIS-2104:
------------------------------
{quote}2. there may be buffer corruption and make the code execution
unpredictable.
{quote}
The same test failure happens when I disable zero-copy in the test. So, buffer
corruption is not a problem.
But anyway, this only happens when GRPC server is shutting down. I think that
is not a critical issue, e.g. in Ozone, ratis GRPC is shut down when DN is
shutting down and leaks at that point don't mean much. Also, zero-copy is
disabled by default.
RATIS-2105 sounds more critical and we should reproduce and fix it.
> TestLeaderInstallSnapshot may fail with java.lang.IllegalStateException:
> allLeaks.size = 4
> ------------------------------------------------------------------------------------------
>
> Key: RATIS-2104
> URL: https://issues.apache.org/jira/browse/RATIS-2104
> Project: Ratis
> Issue Type: Bug
> Reporter: Tsz-wo Sze
> Priority: Major
> Time Spent: 40m
> Remaining Estimate: 0h
>
> I can reproduce it with ratis-3.1.0-rc0
> {code}
> [INFO] Running org.apache.ratis.grpc.TestLeaderInstallSnapshot
> [ERROR] Tests run: 2, Failures: 0, Errors: 2, Skipped: 0, Time elapsed:
> 65.892 s <<< FAILURE! - in org.apache.ratis.grpc.TestLeaderInstallSnapshot
> [ERROR]
> org.apache.ratis.grpc.TestLeaderInstallSnapshot.testInstallSnapshotLeaderSwitch(Boolean)[1]
> Time elapsed: 20.055 s <<< ERROR!
> java.lang.IllegalStateException: allLeaks.size = 4
> at org.apache.ratis.util.Preconditions.assertTrue(Preconditions.java:77)
> at
> org.apache.ratis.util.LeakDetector.assertNoLeaks(LeakDetector.java:107)
> at
> org.apache.ratis.server.impl.MiniRaftCluster.shutdown(MiniRaftCluster.java:869)
> at
> org.apache.ratis.grpc.MiniRaftClusterWithGrpc.shutdown(MiniRaftClusterWithGrpc.java:93)
> at
> org.apache.ratis.server.impl.MiniRaftCluster$Factory$Get.runWithNewCluster(MiniRaftCluster.java:149)
> at
> org.apache.ratis.server.impl.MiniRaftCluster$Factory$Get.runWithNewCluster(MiniRaftCluster.java:121)
> at
> org.apache.ratis.InstallSnapshotFromLeaderTests.testInstallSnapshotLeaderSwitch(InstallSnapshotFromLeaderTests.java:94)
> at
> org.apache.ratis.grpc.TestLeaderInstallSnapshot.testInstallSnapshotLeaderSwitch(TestLeaderInstallSnapshot.java:53)
> {code}
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