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From "Philip Thompson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10449) OOM on bootstrap due to long GC pause
Date Tue, 06 Oct 2015 15:07:26 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14945149#comment-14945149
] 

Philip Thompson commented on CASSANDRA-10449:
---------------------------------------------

[~yukim], do you want to look at this as well?

> OOM on bootstrap due to long GC pause
> -------------------------------------
>
>                 Key: CASSANDRA-10449
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10449
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Ubuntu 14.04, AWS
>            Reporter: Robbie Strickland
>              Labels: gc
>             Fix For: 2.1.x
>
>         Attachments: system.log.10-05
>
>
> I have a 20-node cluster (i2.4xlarge) with vnodes (default of 256) and 500-700GB per
node.  SSTable counts are <10 per table.  I am attempting to provision additional nodes,
but bootstrapping OOMs every time after about 10 hours with a sudden long GC pause:
> {noformat}
> INFO  [Service Thread] 2015-10-05 23:33:33,373 GCInspector.java:252 - G1 Old Generation
GC in 1586126ms.  G1 Old Gen: 49213756976 -> 49072277176;
> ...
> ERROR [MemtableFlushWriter:454] 2015-10-05 23:33:33,380 CassandraDaemon.java:223 - Exception
in thread Thread[MemtableFlushWriter:454,5,main]
> java.lang.OutOfMemoryError: Java heap space
> {noformat}
> I have tried increasing max heap to 48G just to get through the bootstrap, to no avail.



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