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From "Jeff Jirsa (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10449) OOM on bootstrap after long GC pause
Date Wed, 06 Jul 2016 16:16:11 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15364543#comment-15364543
] 

Jeff Jirsa commented on CASSANDRA-10449:
----------------------------------------

If anything, it's a combination of CASSANDRA-10474 and CASSANDRA-9681 (as [~mishail] pointed
out), and not CASSANDRA-10680. 

> OOM on bootstrap after long GC pause
> ------------------------------------
>
>                 Key: CASSANDRA-10449
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10449
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: Ubuntu 14.04, AWS
>            Reporter: Robbie Strickland
>              Labels: gc
>             Fix For: 2.1.x
>
>         Attachments: GCpath.txt, heap_dump.png, system.log.10-05, thread_dump.log, threads.txt
>
>
> 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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