Blake Eggleston created CASSANDRA-13643:
-------------------------------------------
Summary: 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: [email protected]
For additional commands, e-mail: [email protected]
