Yifan Zhang has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/19630 )

Change subject: IMPALA-8731: Balance queries across multiple executor groups
......................................................................


Patch Set 6:

(6 comments)

http://gerrit.cloudera.org:8080/#/c/19630/5/be/src/scheduling/admission-controller.cc
File be/src/scheduling/admission-controller.cc:

http://gerrit.cloudera.org:8080/#/c/19630/5/be/src/scheduling/admission-controller.cc@2569
PS5, Line 2569:   }
> add DCHECK with total_mem_limit - agg_effective_mem_reserved >= 0 and total
Done


http://gerrit.cloudera.org:8080/#/c/19630/5/be/src/scheduling/admission-controller.cc@2603
PS5, Line 2603: rom, matching_groups.end());
> available memory and slots in descending order
Done


http://gerrit.cloudera.org:8080/#/c/19630/5/be/src/scheduling/admission-controller.cc@2606
PS5, Line 2606: t admission to group with lower load first.
> For available memory and slots, which has high priority? Should we compare 
I think memory has a high priority. In our clusters, we often see more queued 
queries with the reason 'Not enough memory available on host xxx'.


http://gerrit.cloudera.org:8080/#/c/19630/5/tests/custom_cluster/test_executor_groups.py
File tests/custom_cluster/test_executor_groups.py:

http://gerrit.cloudera.org:8080/#/c/19630/5/tests/custom_cluster/test_executor_groups.py@903
PS5, Line 903:     """Tests that the default admission control assign policy is 
filling up executor
> Could you add more detail for this test?
Done


http://gerrit.cloudera.org:8080/#/c/19630/5/tests/custom_cluster/test_executor_groups.py@906
PS5, Line 906: sele
> nit: indentation
Done


http://gerrit.cloudera.org:8080/#/c/19630/5/tests/custom_cluster/test_executor_groups.py@914
PS5, Line 914: fair_scheduler_allocation_path %s "
> Can you add another test where if balance_queries_across_executor_groups=fa
Done



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I25e851fb57c1d820c25cef5316f4ed800e4c6ac5
Gerrit-Change-Number: 19630
Gerrit-PatchSet: 6
Gerrit-Owner: Yifan Zhang <chinazhangyi...@163.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Riza Suminto <riza.sumi...@cloudera.com>
Gerrit-Reviewer: Wenzhe Zhou <wz...@cloudera.com>
Gerrit-Reviewer: Yifan Zhang <chinazhangyi...@163.com>
Gerrit-Comment-Date: Fri, 24 Mar 2023 13:45:19 +0000
Gerrit-HasComments: Yes

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