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https://issues.apache.org/jira/browse/IGNITE-12350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17010749#comment-17010749
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Jurijs Grabovskis commented on IGNITE-12350:
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Any updates here?
Got similar problem in 2.7.6 release. atomicityMode is unset or set
TRANSACTIONAL (for most caches). There are some Ignite server nodes and a lot
of clients (10+). After some time and under load client nodes got OOM errors
and then restarted + reconnected to cluster, therefore leading to topology
update and growing of MvccProcessorImpl.recoveryBallotBoxes , which leads to
other client nodes to crash because of OOM and so on like a snowball.
Will try to attach screenshots from MemoryAnalyzer tool.
Are there any possibilities at least of safe workaround? !proxy-memory-leak.png!
> 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
> Priority: Major
> Attachments: MATheap.jpg, proxy-memory-leak.png, proxy-oom-2.png
>
>
> 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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