[ https://issues.apache.org/jira/browse/CASSANDRA-5624?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis updated CASSANDRA-5624: -------------------------------------- Description: A customer reported a memory leak when off-heap row cache is enabled. I gave them a patch against 1.1.9 to troubleshoot (https://github.com/jbellis/cassandra/commits/row-cache-finalizer). This confirms that row cache is responsible. Here is a sample of the log: {noformat} DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 69) Unreachable memory still has nonzero refcount 1 DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 71) Unreachable memory 140337996747792 has not been freed (will free now) DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 69) Unreachable memory still has nonzero refcount 1 DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 71) Unreachable memory 140337989287984 has not been freed (will free now) {noformat} That is, memory is not being freed because we never got to zero references. was: A customer reported a memory leak when off-heap row cache is enabled. I gave them a patch against 1.1.9 to troubleshoot (https://github.com/jbellis/cassandra/commits/row-cache-finalizer). This confirms that row cache is responsible. Here is a sample of the log: {noformat} DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 69) Unreachable memory still has nonzero refcount 1 DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 71) Unreachable memory 140337996747792 has not been freed (will free now) DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 69) Unreachable memory still has nonzero refcount 1 DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 71) Unreachable memory 140337989287984 has not been freed (will free now) {noformat} > Memory leak in SerializingCache > ------------------------------- > > Key: CASSANDRA-5624 > URL: https://issues.apache.org/jira/browse/CASSANDRA-5624 > Project: Cassandra > Issue Type: Bug > Components: Core > Affects Versions: 1.1.1 > Reporter: Jonathan Ellis > Assignee: Ryan McGuire > > A customer reported a memory leak when off-heap row cache is enabled. > I gave them a patch against 1.1.9 to troubleshoot > (https://github.com/jbellis/cassandra/commits/row-cache-finalizer). This > confirms that row cache is responsible. Here is a sample of the log: > {noformat} > DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 69) > Unreachable memory still has nonzero refcount 1 > DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 71) > Unreachable memory 140337996747792 has not been freed (will free now) > DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 69) > Unreachable memory still has nonzero refcount 1 > DEBUG [Finalizer] 2013-06-08 06:49:58,656 FreeableMemory.java (line 71) > Unreachable memory 140337989287984 has not been freed (will free now) > {noformat} > That is, memory is not being freed because we never got to zero references. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira