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https://issues.apache.org/jira/browse/DRILL-1519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hanifi Gunes updated DRILL-1519:
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Assignee: DrillCommitter (was: Hanifi Gunes)
> Concurrent access to WorkEventBus#getOrCreateFragmentManager leaks memory.
> --------------------------------------------------------------------------
>
> Key: DRILL-1519
> URL: https://issues.apache.org/jira/browse/DRILL-1519
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Hanifi Gunes
> Assignee: DrillCommitter
>
> WorkEventBus uses a ConcurrentHashMap to ensure there is one and only one
> FragmentManager corresponding to each unique FragmentHandle. The method
> creates a FragmentManager that reserves some initial memory if a thread
> observes that it is not in the map. However, in case of concurrent access, we
> still need to clean up after if multiple threads observe that FragmentManager
> does not exist and create multiple FragmentManagers.
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