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Posted to issues-all@impala.apache.org by "Michael Smith (Jira)" <ji...@apache.org> on 2023/03/02 23:38:00 UTC
[jira] [Commented] (IMPALA-11966) Enable cache_ozone_file_handles by default
[ https://issues.apache.org/jira/browse/IMPALA-11966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17695930#comment-17695930 ]
Michael Smith commented on IMPALA-11966:
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Ozone file handle caching was disabled by default partially due to HDDS-7135. That has been fixed in Ozone 1.3.0.
> Enable cache_ozone_file_handles by default
> ------------------------------------------
>
> Key: IMPALA-11966
> URL: https://issues.apache.org/jira/browse/IMPALA-11966
> Project: IMPALA
> Issue Type: Sub-task
> Components: be
> Reporter: David Rorke
> Assignee: Michael Smith
> Priority: Major
>
> Ozone file handle caching support was added in IMPALA-10214 but disabled by default initially. Subsequent performance testing with TPC-DS at 10TB scale has shown that enabling Ozone file handle caching improves TPC-DS geomean query time by 10%. The cache_ozone_file_handles parameter should be enabled by default.
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