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Blake Eggleston commented on CASSANDRA-13643: --------------------------------------------- unit test run here: https://circleci.com/gh/bdeggleston/cassandra/55 > converting expired ttl cells to tombstones causing unnecessary digest > mismatches > -------------------------------------------------------------------------------- > > Key: CASSANDRA-13643 > URL: https://issues.apache.org/jira/browse/CASSANDRA-13643 > Project: Cassandra > Issue Type: Bug > Reporter: Blake Eggleston > Assignee: Blake Eggleston > Priority: Minor > > In > [{{AbstractCell#purge}}|https://github.com/apache/cassandra/blob/26e025804c6777a0d124dbc257747cba85b18f37/src/java/org/apache/cassandra/db/rows/AbstractCell.java#L77] > , we convert expired ttl'd cells to tombstones, and set the the local > deletion time to the cell's expiration time, less the ttl time. Depending on > the timing of the purge, this can cause purge to generate tombstones that are > otherwise purgeable. If compaction for a row with ttls isn't at the same > state between replicas, this will then cause digest mismatches between > logically identical rows, leading to unnecessary repair streaming and read > repairs. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org