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https://issues.apache.org/jira/browse/CASSANDRA-2301?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-2301:
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Reviewer: jbellis
Description:
Repair can OOM when lots of ranges are inconsistent, causing many sstables to
be streamed.
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.
was:
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.
Affects Version/s: (was: 0.7.1)
0.7.0
Assignee: Joaquin Casares
Summary: OOM on repair with many inconsistent ranges (was: OOM
on repair)
> OOM on repair with many inconsistent ranges
> -------------------------------------------
>
> Key: CASSANDRA-2301
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2301
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 0.7.0
> Reporter: Joaquin Casares
> Assignee: Joaquin Casares
> Fix For: 0.7.4
>
> Attachments: 2301.diff
>
>
> Repair can OOM when lots of ranges are inconsistent, causing many sstables to
> be streamed.
> 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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