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https://issues.apache.org/jira/browse/IMPALA-6876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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yx91490 resolved IMPALA-6876.
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Fix Version/s: Impala 4.3.0
Resolution: Fixed
> Entries in CatalogUsageMonitor are not cleared after invalidation
> -----------------------------------------------------------------
>
> Key: IMPALA-6876
> URL: https://issues.apache.org/jira/browse/IMPALA-6876
> Project: IMPALA
> Issue Type: Bug
> Components: Catalog
> Affects Versions: Impala 3.0, Impala 2.12.0
> Reporter: Dimitris Tsirogiannis
> Assignee: yx91490
> Priority: Major
> Labels: memory-leak, ramp-up
> Fix For: Impala 4.3.0
>
>
> The CatalogUsageMonitor in the catalog maintains a small cache of references
> to tables that: a) are accessed frequently in the catalog and b) have the
> highest memory requirements. These entries are not cleared upon server or
> table invalidation, thus preventing the GC from collecting the memory of
> these tables. We should make sure that the CatalogUsageMonitor does not
> maintain entries of tables that have been invalidated or deleted.
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