Wei Deng created CASSANDRA-9604:
-----------------------------------
Summary: Upon JVM OOM (Out Of Memory), print out a summary of heap
histograms in addition to heap dump
Key: CASSANDRA-9604
URL: https://issues.apache.org/jira/browse/CASSANDRA-9604
Project: Cassandra
Issue Type: Improvement
Components: Config
Reporter: Wei Deng
Priority: Minor
It appears that jmap has an option to allow dumping heap histograms after a
heap dump is generated
(http://www.oracle.com/technetwork/java/javase/memleaks-137499.html#gbywi).
This could be useful to provide a very quick overview of the biggest objects in
heap without having to download the massive hprof file off the Cassandra nodes.
We can potentially hook it up using this JVM option:
-XX:OnOutOfMemoryError="<cmd args>; <cmd args>" in the cassandra-env.sh file.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
