Jeff Jirsa created CASSANDRA-13282:
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Summary: Commitlog replay may fail if last mutation is within 4
bytes of end of segment
Key: CASSANDRA-13282
URL: https://issues.apache.org/jira/browse/CASSANDRA-13282
Project: Cassandra
Issue Type: Bug
Reporter: Jeff Jirsa
Assignee: Jeff Jirsa
Fix For: 3.0.x, 3.11.x, 4.x
Following CASSANDRA-9749 , stricter correctness checks on commitlog replay can
incorrectly detect "corrupt segments" and stop commitlog replay (and
potentially stop cassandra, depending on the configured policy). In
{{CommitlogReplayer#replaySyncSection}} we try to read a 4 byte int
{{serializedSize}}, and if it's 0 (which will happen due to zeroing when the
segment was created), we continue on to the next segment. However, it appears
that if a mutation is sized such that it ends with 1, 2, or 3 bytes remaining
in the segment, we'll hit pass the {{isEOF}} on the while loop but fail to read
the {{serializedSize}} int, and fail.
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