liuyao has posted comments on this change. (
http://gerrit.cloudera.org:8080/16947 )
Change subject: IMPALA-10435: Extend 'compute incremental stats' syntax to
support a list of columns
......................................................................
Patch Set 3:
I have added test cases.
Compute incremental stats (partition1) (col1,col2)
Compute incremental stats (partition2) (col1,col3)
Check the statistics, col2 only has partition1 statistics. The ndv
of col2 will be smaller than the full table, because this table has
many partitions. ndv and other statistics are correct.
Compute incremental stats (partition2) (col2)
Check the statistics, col2 has the statistics of partition1 and
partition2. The ndv of col2 will increase, and the ndv and other
statistics are correct.
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I4dcc2d4458679c39581446f6d87bb7903803f09b
Gerrit-Change-Number: 16947
Gerrit-PatchSet: 3
Gerrit-Owner: liuyao <[email protected]>
Gerrit-Reviewer: Alex Behm <[email protected]>
Gerrit-Reviewer: Aman Sinha <[email protected]>
Gerrit-Reviewer: Bikramjeet Vig <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-Reviewer: Vuk Ercegovac <[email protected]>
Gerrit-Reviewer: liuyao <[email protected]>
Gerrit-Comment-Date: Wed, 20 Jan 2021 08:02:33 +0000
Gerrit-HasComments: No
