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From "Robbie Strickland (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-10449) OOM on bootstrap due to long GC pause
Date Tue, 06 Oct 2015 00:42:26 GMT
Robbie Strickland created CASSANDRA-10449:
---------------------------------------------

             Summary: 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
            Reporter: Robbie Strickland


I have a 20-node cluster with vnodes (default of 256) and 500-700GB per node.  SSTable counts
are <10 per node.  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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