Ming Vuong created IGNITE-12350:
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Summary: MVCC activated and causing memory leak (OOM) despite no
mvccEnabled caches
Key: IGNITE-12350
URL: https://issues.apache.org/jira/browse/IGNITE-12350
Project: Ignite
Issue Type: Bug
Affects Versions: 2.7.5
Reporter: Ming Vuong
Attachments: MATheap.jpg
We have a critical memory leak where mvccCoordinator is still selected and mvcc
is still 'activated' despite having no mvccEnabled caches, this is causing
constant OOM crashes and issues on both server and client nodes.
All client CacheAtomicityModes are of type ATOMIC, and for server config
persistence is false, TCPDiscoverySpi used and PeerClassLoadingEnabled=true.
There are two server JVM instances on two separate nodes. One of the servers
consistently get an OOM error, as well as all clients, due to the same
recoveryBallotBoxes HashMap constantly increasing in size and unable to be
Garbage Collected.
Attached is Eclipse Memory Analyzer Tool screenshot on the heap dump close to
one of the server JVM OOM crashes. The same heap analysis result is apparent
for all clients as well.
!MATheap.jpg!
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