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https://issues.apache.org/jira/browse/CASSANDRA-13663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16171766#comment-16171766
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Ricardo Bartolome commented on CASSANDRA-13663:
-----------------------------------------------
Does anybody have news about this issue?
We are experiencing a similar issue even in our case we don't see any
oom-killer errors. Our scenario is:
* 12 x i3.2xlarge instances (8 CPU, 64GB memory)
* Storage per node is ~400GB
* Cassandra 3.9 (looking for an upgrade, but nothing appears listed in the
CHANGELOG related to this issue)
* Oracle JVM build 1.8.0_112-b15
We also have 1-2 dead nodes a week. We have been enabling HeapDumps on several
nodes to help to identify but so far didn't reproduce in the nodes that have it
enabled (neither if it will contain some useful information, if the problem is
off-heap).
Some off-heap memory usage statistics gathered through JMX exploring the
following beans:
* org.apache.cassandra.metrics:name=BloomFilterOffHeapMemoryUsed,type=Table
* org.apache.cassandra.metrics:name=AllMemtablesOffHeapSize,type=Table
*
org.apache.cassandra.metrics:name=CompressionMetadataOffHeapMemoryUsed,type=Table
h4. BloomFilterOffHeapMemoryUsed (~ 1.6GB)
{code}
Value = 1619193928;
Value = 1546767024;
Value = 1669879216;
Value = 1576772336;
Value = 1567804792;
Value = 1605097824;
Value = 1608551904;
Value = 1502500424;
Value = 1363705192;
Value = 1259389280;
Value = 1671282736;
{code}
h4. AllMemtablesOffHeapSize (~700MB)
{code}
Value = 692597111;
Value = 617691154;
Value = 693412363;
Value = 708732630;
Value = 664297343;
Value = 705367430;
Value = 626936323;
Value = 652724309;
Value = 700223457;
Value = 666516571;
Value = 682268720;
{code}
h4. CompressionMetadataOffHeapMemoryUsed (~110MB)
{code}
Value = 111307336;
Value = 105718312;
Value = 110638576;
Value = 111370032;
Value = 105979296;
Value = 108963456;
Value = 111122216;
Value = 99788200;
Value = 95279232;
Value = 106130392;
Value = 113217400;
{code}
Any idea what else I can look at?
> Cassandra 3.10 crashes without dump
> -----------------------------------
>
> Key: CASSANDRA-13663
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13663
> Project: Cassandra
> Issue Type: Bug
> Reporter: Matthias Otto
> Priority: Minor
> Attachments: 2017-07-04 10_48_34-CloudWatch Management Console.png,
> cassandra debug.log, cassandra system.log, RamUsageExamle1.png,
> RamUsageExample2.png
>
>
> Hello. My company runs a 5 node Cassandra cluster. For the last few weeks, we
> have had a sporadic issue where one of the servers crashes without creating a
> dump file and without any error messages in the logs. If one restarts the
> service (which we have by now scripted to happen automatically), the servers
> resumes work with no complaint.
> Log files of the time of the last crash are attached, thou again they do not
> log any crash happening.
> Regarding out setup, we are running these servers on AMazon AWS, with 3
> volumes per server, one for the system, one for data and one for the
> commitlog. When a crash happens, we can observe a sudden spike of read
> activity on the commitlog volume. All of these have ample free space.
> Aspecially the system volume has more then enough free space so that a dump
> could be written.
> The servers are Ubuntu 16.04 servers and Cassandra is installed from the
> apt-get packet for version 3.10.
> It is worth noting that these crashes happen more often when nodetool is
> running either repair job or a backup job, but this is by no means always the
> case. As for frequency, we have had about 1-2 crashes per week for the last
> month.
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