Yifan Cai created CASSANDRA-16415:
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Summary: Flaky test mixedModeReadColumnSubsetDigestCheck -
org.apache.cassandra.distributed.upgrade.MixedModeReadTest
Key: CASSANDRA-16415
URL: https://issues.apache.org/jira/browse/CASSANDRA-16415
Project: Cassandra
Issue Type: Bug
Components: Consistency/Coordination, Test/dtest/java
Reporter: Yifan Cai
The test has been failing and can always be reproduced in the recent CI.
Stack trace:
junit.framework.AssertionFailedError: Found Digest Mismatch
at
org.apache.cassandra.distributed.upgrade.MixedModeReadTest.checkTraceForDigestMismatch(MixedModeReadTest.java:89)
at
org.apache.cassandra.distributed.upgrade.MixedModeReadTest.lambda$mixedModeReadColumnSubsetDigestCheck$0(MixedModeReadTest.java:63)
at
org.apache.cassandra.distributed.upgrade.UpgradeTestBase$TestCase.run(UpgradeTestBase.java:171)
at
org.apache.cassandra.distributed.upgrade.MixedModeReadTest.mixedModeReadColumnSubsetDigestCheck(MixedModeReadTest.java:76)
The initial investigation shows that
* The test only fails in the setup phase of
mixedModeReadColumnSubsetDigestCheck. The cluster version is
*Versions.Major.v3X*
* The test failure is likely a consequence of CASSANDRA-15962. After dropping
the commit in branch cassandra-3.11 and rebuild the dtest jar, the upgrade test
can pass. Meanwhile, dropping the other commits does not help.
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