[
https://issues.apache.org/jira/browse/HIVE-27238?focusedWorklogId=859926&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-859926
]
ASF GitHub Bot logged work on HIVE-27238:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/May/23 21:00
Start Date: 01/May/23 21:00
Worklog Time Spent: 10m
Work Description: scarlin-cloudera closed pull request #4212: HIVE-27238:
Avoid Calcite Code generation for MetadataHandler on ever…
URL: https://github.com/apache/hive/pull/4212
Issue Time Tracking
-------------------
Worklog Id: (was: 859926)
Time Spent: 1h (was: 50m)
> Avoid Calcite Code generation for RelMetaDataProvider on every query
> --------------------------------------------------------------------
>
> Key: HIVE-27238
> URL: https://issues.apache.org/jira/browse/HIVE-27238
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2
> Reporter: Steve Carlin
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h
> Remaining Estimate: 0h
>
> In CalcitePlanner, we are instantiating a new CachingRelMetadataProvider on
> every query. Within the Calcite code, they keep the provider key to prevent
> a new MetadataHandler class from being created. But by generating a new
> provider, the cache never gets a hit so we keep instantiating new
> MetadataHandlers.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
