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https://issues.apache.org/jira/browse/IGNITE-12350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17177816#comment-17177816
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Ignite TC Bot commented on IGNITE-12350:
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{panel:title=Branch: [pull/8152/head] Base: [master] : No blockers
found!|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}{panel}
{panel:title=Branch: [pull/8152/head] Base: [master] : New Tests
(2)|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}
{color:#00008b}MVCC Cache{color} [[tests
2|https://ci.ignite.apache.org/viewLog.html?buildId=5538631]]
* {color:#013220}IgniteCacheMvccTestSuite:
MvccStructuresOverheadTest.testWithoutMvcc - PASSED{color}
* {color:#013220}IgniteCacheMvccTestSuite:
MvccStructuresOverheadTest.testWithMvcc - PASSED{color}
{panel}
[TeamCity *--> Run :: All*
Results|https://ci.ignite.apache.org/viewLog.html?buildId=5538704&buildTypeId=IgniteTests24Java8_RunAll]
> 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
> Assignee: Vladislav Pyatkov
> Priority: Major
> Attachments: MATheap.jpg, proxy-memory-leak.png, proxy-oom-2.png
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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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