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Aleksey Yeschenko commented on CASSANDRA-9917: ---------------------------------------------- Yes, CREATE MV, ALTER TABLE, ALTER MV. More generally, batchlog writes should warn if any involved tables have extremely low gc gs - whatever extremely low actually is - with or without MVs. That said, I have no idea what {{MIN_GC_GRACE_SECONDS}} should be. Just bringing up the issue that batchlog is completely useless for such writes. > MVs should validate gc grace seconds on the tables involved > ----------------------------------------------------------- > > Key: CASSANDRA-9917 > URL: https://issues.apache.org/jira/browse/CASSANDRA-9917 > Project: Cassandra > Issue Type: Bug > Reporter: Aleksey Yeschenko > Assignee: Paulo Motta > Labels: materializedviews > Fix For: 3.0.0 rc1 > > > For correctness reasons (potential resurrection of dropped values), batchlog > entries are TTLs with the lowest gc grace second of all the tables involved > in a batch. > It means that if gc gs is set to 0 in one of the tables, the batchlog entry > will be dead on arrival, and never replayed. > We should probably warn against such LOGGED writes taking place, in general, > but for MVs, we must validate that gc gs on the base table (and on the MV > table, if we should allow altering gc gs there at all), is never set too low, > or else. -- This message was sent by Atlassian JIRA (v6.3.4#6332)