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https://issues.apache.org/jira/browse/IMPALA-9140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vihang Karajgaonkar resolved IMPALA-9140.
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Resolution: Won't Fix
Based on the discussion above, it looks like there is no significant benefit by
fixing this JIRA. Closing this as "won't fix".
> Get rid of the unnecessary load submitter thread pool in tblLoadingMgr
> ----------------------------------------------------------------------
>
> Key: IMPALA-9140
> URL: https://issues.apache.org/jira/browse/IMPALA-9140
> Project: IMPALA
> Issue Type: Bug
> Components: Catalog
> Reporter: Vihang Karajgaonkar
> Priority: Major
>
> This JIRA is created as a followup on the discussion on
> https://gerrit.cloudera.org/#/c/14611 related to various pools used for
> loading tables.
> It looks like there are 2 pools of threads both of the size
> {{num_metadata_loading_threads}}. One pool is used to submit the load
> requests to another pool {{tblLoadingPool_}} which does the actual loading of
> the tables. I think we can get rid of the pool which submits the tasks since
> it is not very time-consuming operation and can be done synchronously (all it
> needs to do submit the task in the queue in the front or back based on
> whether its a prioritized load or background load). This will simplify the
> loading code and reduce unnecessary number of threads being created by
> {{TblLoadingMgr}}
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