[CASSANDRA-14195] CommitLogSegmentManagerCDCTest is flaky

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 4.0-alpha1, 4.0
• Component/s: Legacy/Testing
• Severity: Low
• Assignee: Jay Zhuang
• Reporter: Ariel Weisberg

Authors

Jay Zhuang

Reviewers

Joshua McKenzie

• Created: 26/Jan/18 22:19
• Updated: 15/May/20 08:02
• Resolved: 30/Jan/18 15:10

Description

This fails fairly reliably in CircleCI and in a few minutes if you run it in a loop on a MacOS laptop.

I see two failures.

    [junit] Testcase: testRetainLinkOnDiscardCDC(org.apache.cassandra.db.commitlog.CommitLogSegmentManagerCDCTest):	Caused an ERROR
    [junit] Rejecting mutation to keyspace cql_test_keyspace. Free up space in build/test/cassandra/cdc_raw:0 by processing CDC logs.
    [junit] org.apache.cassandra.exceptions.CDCWriteException: Rejecting mutation to keyspace cql_test_keyspace. Free up space in build/test/cassandra/cdc_raw:0 by processing CDC logs.
    [junit] 	at org.apache.cassandra.db.commitlog.CommitLogSegmentManagerCDC.throwIfForbidden(CommitLogSegmentManagerCDC.java:136)
    [junit] 	at org.apache.cassandra.db.commitlog.CommitLogSegmentManagerCDC.allocate(CommitLogSegmentManagerCDC.java:108)
    [junit] 	at org.apache.cassandra.db.commitlog.CommitLog.add(CommitLog.java:272)
    [junit] 	at org.apache.cassandra.db.Keyspace.applyInternal(Keyspace.java:604)
    [junit] 	at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:481)
    [junit] 	at org.apache.cassandra.db.Mutation.apply(Mutation.java:191)
    [junit] 	at org.apache.cassandra.db.Mutation.apply(Mutation.java:196)
    [junit] 	at org.apache.cassandra.db.Mutation.apply(Mutation.java:205)
    [junit] 	at org.apache.cassandra.db.commitlog.CommitLogSegmentManagerCDCTest.testRetainLinkOnDiscardCDC(CommitLogSegmentManagerCDCTest.java:256)

and

    [junit] Testcase: testCompletedFlag(org.apache.cassandra.db.commitlog.CommitLogSegmentManagerCDCTest):	FAILED
    [junit] Index file not written: build/test/cassandra/cdc_raw:0/CommitLog-7-1517005121474_cdc.idx
    [junit] junit.framework.AssertionFailedError: Index file not written: build/test/cassandra/cdc_raw:0/CommitLog-7-1517005121474_cdc.idx
    [junit] 	at org.apache.cassandra.db.commitlog.CommitLogSegmentManagerCDCTest.testCompletedFlag(CommitLogSegmentManagerCDCTest.java:210)

Issue Links

• is caused by: CASSANDRA-12148 Improve determinism of CDC data availability
• is caused by: CASSANDRA-14141 Enable CDC unittest