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Posted to issues@flink.apache.org by "Shammon (Jira)" <ji...@apache.org> on 2022/01/25 02:04:00 UTC

[jira] [Created] (FLINK-25794) Memory pages in LazyMemorySegmentPool should be clear after they are released to MemoryManager

Shammon created FLINK-25794:
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             Summary: 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: 1.14.3, 1.13.5, 1.11.6
            Reporter: Shammon


`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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