[jira] [Created] (IMPALA-9140) Get rid of the unnecessary load submitter thread pool in tblLoadingMgr

["Vihang Karajgaonkar (Jira)" <ji...@apache.org>]

Vihang Karajgaonkar created IMPALA-9140:
-------------------------------------------

             Summary: 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
            Reporter: Vihang Karajgaonkar


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}}



--
This message was sent by Atlassian Jira
(v8.3.4#803005)