Oleg Anastasyev created CASSANDRA-6863:
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Summary: Incorrect read repair of range thombstones
Key: CASSANDRA-6863
URL: https://issues.apache.org/jira/browse/CASSANDRA-6863
Project: Cassandra
Issue Type: Bug
Environment: 2.0
Reporter: Oleg Anastasyev
Attachments: ReadRepairRangeThombstoneDiff.txt,
ReadRepairsDebugLogger.txt
Rows with range thombstones are read repaired for every replica, if RR is
triggered (this is because CF.diff() returns non null if !isEmpty(), which in
turn returns false if range thombstones list is not empty).
Also, full rangethombstone list is send to all nodes, which could be a problem
if you have wide partition.
Fixed this by evaluating diff on range thombstone lists as well as on
deteleInfo of endpoint CF versions. Also return null from CF.diff, if no diff
in RTL.
A second patch (ReadRepairsDebugLogger.txt) adds some debug logging to look at
read repairs. You may find it useful as well.
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