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https://issues.apache.org/jira/browse/FLINK-25794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17481624#comment-17481624
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Jingsong Lee commented on FLINK-25794:
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Hi [~zjureel] , `MemoryManager.release` will clear segments collection.
> Memory pages in LazyMemorySegmentPool should be clear after they are released
> to MemoryManager
> ----------------------------------------------------------------------------------------------
>
> Key: FLINK-25794
> URL: https://issues.apache.org/jira/browse/FLINK-25794
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Runtime
> Affects Versions: 1.11.6, 1.13.5, 1.14.3
> Reporter: Shammon
> Assignee: Shammon
> Priority: Major
> Labels: pull-request-available
>
> `LazyMemorySegmentPool` manages memory segments cache for join, agg, sort and
> etc. operators. These segments in the cache will be released to
> `MemoryManager` after some specify operations such as join operator finishes
> to build data in `LazyMemorySegmentPool.cleanCache` method. But these
> segments are still in `LazyMemorySegmentPool.cachePages`, it may cause memory
> fault if the `MemoryManager` has deallocated these segments
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