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https://issues.apache.org/jira/browse/IMPALA-12154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joe McDonnell resolved IMPALA-12154.
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Fix Version/s: Impala 4.3.0
Resolution: Fixed
> LIRS cache implementation is missing some locations to trim the recency list
> ----------------------------------------------------------------------------
>
> Key: IMPALA-12154
> URL: https://issues.apache.org/jira/browse/IMPALA-12154
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 4.3.0
> Reporter: Joe McDonnell
> Assignee: Joe McDonnell
> Priority: Major
> Fix For: Impala 4.3.0
>
>
> In some testing for IMPALA-10971, I found that some code locations doing
> ToUninitialized() are not checking and trimming the recency list. In
> particular, Erase() doesn't check whether the entry being erased is the last
> entry on the recency list, so it doesn't do the trim appropriately. Also, the
> instant eviction codepath doesn't check either.
> These are edge cases, but they can result in an assert firing for
> EnforceProtectedCapacity() or MoveToRecencyListBack().
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