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https://issues.apache.org/jira/browse/CASSANDRA-11995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15644593#comment-15644593
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John Marsten commented on CASSANDRA-11995:
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I'm not too familiar with the Cassandra code base, but it looks like the
CommitLogSegment.createSegment() method returns an instance that has had the
log header written, but not synced. So until a sync is triggered (periodic,
batch, or graceful shutdown), the segment file is left in a corrupt state
because it has no header on disk. If I'm right about this, I'd suggest making
CommitLogSegment.createSegment() call sync() on the new segment before
returning it.
> Commitlog replaced with all NULs
> --------------------------------
>
> Key: CASSANDRA-11995
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11995
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: Windows 10 Enterprise 1511
> DataStax Cassandra Community Server 2.2.3
> Reporter: James Howe
>
> I noticed this morning that Cassandra was failing to start, after being shut
> down on Friday.
> {code}
> ERROR 09:13:37 Exiting due to error while processing commit log during
> initialization.
> org.apache.cassandra.db.commitlog.CommitLogReplayer$CommitLogReplayException:
> Could not read commit log descriptor in file C:\Program Files\DataStax
> Community\data\commitlog\CommitLog-5-1465571056722.log
> at
> org.apache.cassandra.db.commitlog.CommitLogReplayer.handleReplayError(CommitLogReplayer.java:622)
> [apache-cassandra-2.2.3.jar:2.2.3]
> at
> org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:302)
> [apache-cassandra-2.2.3.jar:2.2.3]
> at
> org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:147)
> [apache-cassandra-2.2.3.jar:2.2.3]
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:189)
> [apache-cassandra-2.2.3.jar:2.2.3]
> at
> org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:169)
> [apache-cassandra-2.2.3.jar:2.2.3]
> at
> org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:273)
> [apache-cassandra-2.2.3.jar:2.2.3]
> at
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:513)
> [apache-cassandra-2.2.3.jar:2.2.3]
> at
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:622)
> [apache-cassandra-2.2.3.jar:2.2.3]
> {code}
> Checking the referenced file reveals it comprises 33,554,432 (32 * 1024 *
> 1024) NUL bytes.
> No logs (stdout, stderr, prunsrv) from the shutdown show any other issues and
> appear exactly as normal.
> Is installed as a service via DataStax's distribution.
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