[CASSANDRA-3547] Race between cf flush and its secondary indexes flush

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 1.0.6
• Component/s: Feature/2i Index
• Severity: Normal
• Assignee: Sylvain Lebresne
• Reporter: Sylvain Lebresne

Authors

Sylvain Lebresne

Reviewers

Jonathan Ellis

• Created: 01/Dec/11 11:19
• Updated: 16/Apr/19 09:32
• Resolved: 02/Dec/11 10:50

Description

When a CF with indexes is flushed, it's indexes are flushed too. In particular their memtable is switched, but without making the old memtable frozen. This can conflict with a concurrent flush of the index itself, as reported on the user list by Michael Vaknine:

TST-Cass2 ERROR [Thread-58] 2011-11-30 20:40:17,449 AbstractCassandraDaemon.java (line 133) Fatal exception in thread Thread
TST-Cass2 ERROR [Thread-58] 2011-11-30 20:40:17,449 java.lang.AssertionError
TST-Cass2 ERROR [Thread-58] 2011-11-30 20:40:17,449 at org.apache.cassandra.db.ColumnFamilyStore.maybeSwitchMemtable(ColumnFamilyStore.java:671)
TST-Cass2 ERROR [Thread-58] 2011-11-30 20:40:17,449 at org.apache.cassandra.db.ColumnFamilyStore.forceFlush(ColumnFamilyStore.java:745)
TST-Cass2 ERROR [Thread-58] 2011-11-30 20:40:17,449 at org.apache.cassandra.db.ColumnFamilyStore.forceBlockingFlush(ColumnFamilyStore.java:750)
TST-Cass2 ERROR [Thread-58] 2011-11-30 20:40:17,449 at org.apache.cassandra.db.index.keys.KeysIndex.forceBlockingFlush(KeysIndex.java:119)
TST-Cass2 ERROR [Thread-58] 2011-11-30 20:40:17,449 at org.apache.cassandra.db.index.SecondaryIndexManager.flushIndexesBlocking(SecondaryIndexManager.java:258)
TST-Cass2 ERROR [Thread-58] 2011-11-30 20:40:17,449 at org.apache.cassandra.db.index.SecondaryIndexManager.maybeBuildSecondaryIndexes(SecondaryIndexManager.java:123)
TST-Cass2 ERROR [Thread-58] 2011-11-30 20:40:17,449 at org.apache.cassandra.streaming.StreamInSession.closeIfFinished(StreamInSession.java:151)