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https://issues.apache.org/jira/browse/CASSANDRA-15842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17128030#comment-17128030
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Benjamin Lerer commented on CASSANDRA-15842:
--------------------------------------------
Every component in the Commitlog treat {{shudown}} calls as a noop operation if
they are not already started (which is the same behavior a java
ThreadPoolExecutors). {{CDCSizeTracker}} seems to be the only component in that
part of the code that behave in a different way. So, I do not think that the
current behavior was intended and I believe that it makes sense to make that
component behave like the other ones.
> Fix flaky org.apache.cassandra.schema.SchemaTest.testTransKsMigration-cdc
> -------------------------------------------------------------------------
>
> Key: CASSANDRA-15842
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15842
> Project: Cassandra
> Issue Type: Bug
> Components: Test/unit
> Reporter: Berenguer Blasi
> Assignee: Berenguer Blasi
> Priority: Normal
> Fix For: 4.0-beta
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Failing for the past [28
> builds|https://ci-cassandra.apache.org/job/Cassandra-trunk/153/testReport/org.apache.cassandra.schema/SchemaTest/testTransKsMigration_cdc/]
> java.lang.NullPointerException
> at
> org.apache.cassandra.db.commitlog.CommitLogSegmentManagerCDC$CDCSizeTracker.shutdown(CommitLogSegmentManagerCDC.java:312)
> at
> org.apache.cassandra.db.commitlog.CommitLogSegmentManagerCDC.shutdown(CommitLogSegmentManagerCDC.java:89)
> at
> org.apache.cassandra.db.commitlog.AbstractCommitLogSegmentManager.stopUnsafe(AbstractCommitLogSegmentManager.java:413)
> at
> org.apache.cassandra.db.commitlog.CommitLog.stopUnsafe(CommitLog.java:467)
> at
> org.apache.cassandra.SchemaLoader.cleanupAndLeaveDirs(SchemaLoader.java:785)
> at
> org.apache.cassandra.schema.SchemaTest.testTransKsMigration(SchemaTest.java:46)
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