Sahil Takiar has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/14234 )

Change subject: IMPALA-7637: Add more hash table stats to profile
......................................................................


Patch Set 1:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/14234/1//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/14234/1//COMMIT_MSG@17
PS1, Line 17:           Hash Join Builder (join_node_id=2):
            :             ExecOption: Codegen Disabled: disabled due to 
optimization hints
            :             Runtime filters: 1 of 1 Runtime Filter Published
            :              - BuildRowsPartitionTime: 157.960us
            :              - BuildRowsPartitioned: 100 (100)
            :              - HashTablesBuildTime: 298.817us
            :              - LargestPartitionPercent: 7 (7)
            :              - MaxPartitionLevel: 0 (0)
            :              - NumRepartitions: 0 (0)
            :              - PartitionsCreated: 16 (16)
            :              - PeakMemoryUsage: 17.12 KB (17536)
            :              - RepartitionTime: 0.000ns
            :              - SpilledPartitions: 0 (0)
            :             Hash Table:
            :                - HashBuckets: 256 (256)
            :                - HashCollisions: 0 (0)
            :                - Probes: 2.52K (2520)
            :                - Resizes: 0 (0)
            :                - Travel: 1.79K (1787)
nit: don't think this has to be indented so much, just two spaces is probably 
sufficient, plus the `ExecOption` line is exceeding the max width of the commit 
message.


http://gerrit.cloudera.org:8080/#/c/14234/1/tests/query_test/test_observability.py
File tests/query_test/test_observability.py:

http://gerrit.cloudera.org:8080/#/c/14234/1/tests/query_test/test_observability.py@675
PS1, Line 675:     assert "Hash Table" in runtime_profile
             :     assert "Probes:" in runtime_profile
             :     assert "Travel:" in runtime_profile
             :     assert "HashCollisions:" in runtime_profile
             :     assert "Resizes:" in runtime_profile
would be good to validate that they have valid values - e.g. they are non-zero. 
not sure that would apply to all of these (e.g. resizes), but it would be good 
to add the validation for the ones that are non-zero.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I1fd875dd1af8031242fd5f5ff554d3a71aaa6f87
Gerrit-Change-Number: 14234
Gerrit-PatchSet: 1
Gerrit-Owner: Yongzhi Chen <yc...@cloudera.com>
Gerrit-Reviewer: Bharath Vissapragada <bhara...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Sahil Takiar <stak...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Yongzhi Chen <yc...@cloudera.com>
Gerrit-Comment-Date: Mon, 16 Sep 2019 16:55:08 +0000
Gerrit-HasComments: Yes

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