GC issues with LinkedBlockingQueue, very large heap sizes
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Key: CASSANDRA-896
URL: https://issues.apache.org/jira/browse/CASSANDRA-896
Project: Cassandra
Issue Type: Bug
Affects Versions: 0.6
Reporter: Chris Goffinet
Attachments: Screen shot 2010-03-14 at 10.19.09 PM.png, Screen shot
2010-03-14 at 10.20.31 PM.png
We were doing a large import over thrift today (250M rows) with 50 columns
each. We noticed when this process started, that the heap usage slowly began to
rise. Eventually hitting 10GB. After investigating heap dumps we noticed this
is linked to GC problems in the JVM for LinkedBlockingQueue. Sending a hint
through jconsole to perform GC didn't help either.
See this article:
http://tech.puredanger.com/2009/02/11/linkedblockingqueue-garbagecollection/
JDK 1.6.18 doesn't have this fix yet either. We could possibly add the change
from:
http://svn.apache.org/repos/asf/harmony/standard/classlib/trunk/modules/concurrent/src/main/java/java/util/concurrent/LinkedBlockingQueue.java
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