OOM on repair
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Key: CASSANDRA-2301
URL: https://issues.apache.org/jira/browse/CASSANDRA-2301
Project: Cassandra
Issue Type: Bug
Affects Versions: 0.7.1
Reporter: Joaquin Casares
Fix For: 0.7.4
Attachments: 2301.diff
On repair, the java heap space tends to OOM.
I replicated the error by making 1264 3MB sstables on one node, added a second
node, changed the replication factor to 2, and ran a repair.
Looking at the heap dump of the original failure, there were 2.4GB of
FutureTasks, each taking up 8MB of space. I tracked down the
BufferedRandomAccessFile and made sure that it was cleared every time it was
closed inside of src/java/org/apache/cassandra/io/sstable/SSTableWriter.java.
Attached is the patch I used which stopped the error when I was trying to
replicate it.
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