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Marcus Eriksson updated CASSANDRA-15071: ---------------------------------------- Bug Category: Parent values: Correctness(12982) Complexity: Challenging Discovered By: User Report Status: Open (was: Triage Needed) > Materialized View Inconsistent With Base Table Update After Migrating To New > DC > ------------------------------------------------------------------------------- > > Key: CASSANDRA-15071 > URL: https://issues.apache.org/jira/browse/CASSANDRA-15071 > Project: Cassandra > Issue Type: Bug > Components: Consistency/Bootstrap and Decommission, > Feature/Materialized Views > Reporter: Avraham Kalvo > Priority: High > Labels: cassandra, materializedviews, rebuilding > > We've recently completed a successful migration between two data centers in > our Cassandra cluster. > After adding the new DC nodes onto the existing cluster, and setting the > keyspaces to replicate to both DCs and rebuilding the new DC nodes from the > old one, we've cut-over the applications using those keyspaces o start using > the new DC exclusively by connecting to its end-points and performing > `LOCAL_` consistency level requests there (DCAwareRoundRobinPolicy on LOCAL > DC). > We noticed that once the apps started to read data from the materialized > views in the new DC, that an inconsistency emerged, which wasn't there in the > original DC from which we've migrated. > I.e - source/old DC had the materialized view reflecting the column update on > the base table, while target/new DC didn't (the column value in the MV > remained the same as it was in the base table, prior to the update). > We only found out about it being logged with a support ticket, and for now, > mitigated it by simply recreating the materialized view. > Looking for a root cause for such behavior, is this expected, is this > somewhat of a requirement which wasn't fulfilled yet for the MV mechanism, > such as the ones mentioned in CASSANDRA-13826? > Thanks, > Avi K -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org