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https://issues.apache.org/jira/browse/FLINK-13984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrey Zagrebin closed FLINK-13984.
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Release Note: The managed memory segment preallocation has been completely
removed (Configuration option 'taskmanager.memory.preallocate'). It should not
break the existing setups but setting this option will have no effect which can
lead to a slight performance degradation as the segments will be allocated only
in the ad-hoc manner during the execution.
Resolution: Done
Merged into master by 76349cf80ff5170835de9315420dae082425a74a
> Separate on-heap and off-heap managed memory pools
> --------------------------------------------------
>
> Key: FLINK-13984
> URL: https://issues.apache.org/jira/browse/FLINK-13984
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Task
> Reporter: Xintong Song
> Assignee: Andrey Zagrebin
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.10.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> * Update {{MemoryManager}} to have two separated pools.
> * Extend {{MemoryManager}} interfaces to specify which pool to allocate
> memory from.
> Implement this step in common code paths for the legacy / new mode. For the
> legacy mode, depending to the configured memory type, we can set one of the
> two pools to the managed memory size and always allocate from this pool,
> leaving the other pool empty.
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