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https://issues.apache.org/jira/browse/CASSANDRA-10787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15270908#comment-15270908
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Piotr Westfalewicz commented on CASSANDRA-10787:
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[~ifesdjeen], I've deleted those big, potentially problematic sstables and the
problem is gone. Since then I've changed compaction strategy to create smaller
sstables and the problem never happened again. Hence, it's no longer possible
to recreate the issue and it can be closed.
> OutOfMemoryError after few hours from node restart
> --------------------------------------------------
>
> Key: CASSANDRA-10787
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10787
> Project: Cassandra
> Issue Type: Bug
> Environment: Amazon DataStax Auto-Clustering AMI 2.6.3-1404-pv
> on 2x m1.large instances (2 vCPU, 64-bit, 7.5GB RAM, Raid0 2x420GB Disk)
> [cqlsh 5.0.1 | Cassandra 2.2.3 | CQL spec 3.3.1 | Native protocol v4]
> RF=3
> Reporter: Piotr Westfalewicz
> Fix For: 2.2.x
>
> Attachments: case2_debuglog_head.txt, case2_debuglog_tail.txt,
> case2_systemlog.txt, case3_debuglog_tail.txt, case3_systemlog_tail.txt,
> case4_debuglog_tail.txt, case4_systemlog.txt, case5_debuglog.txt,
> case5_systemlog.txt
>
>
> Cassandra Cluster was operating flawessly for around 3 months. Lately I've
> got a critical problem with it - after few hours of running clients are
> disconnected permanently (that may be Datastax C# Driver problem, though),
> however few more hours later (with smaller load), on all 2 nodes there is
> thrown an exception (details in files):
> bq. java.lang.OutOfMemoryError: Java heap space
> Cases description:
> Case 2 (heavy load):
> - 2015-11-26 16:09:40,834 Restarted all nodes in cassandra cluster
> - 2015-11-26 17:03:46,774 First client disconnected permanently
> - 2015-11-26 22:17:02,327 Node shutdown
> Case 3 (unknown load, different node):
> - 2015-11-26 02:19:49,585 Node shutdown (visible only in
> systemlog, I don't know why not in debug log)
> Case 4 (low load):
> - 2015-11-27 13:00:24,994 Node restart
> - 2015-11-27 22:26:56,131 Node shutdown
> Is that a software issue or I am using too weak Amazon instances? If so, how
> can the required amount of memory be calculated?
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