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From "Alex Behm (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-1654: DDL for multiple partitions
Date Fri, 20 Jan 2017 19:43:55 GMT
Alex Behm has posted comments on this change.

Change subject: IMPALA-1654: DDL for multiple partitions
......................................................................


Patch Set 4:

(3 comments)

http://gerrit.cloudera.org:8080/#/c/5726/4/docs/topics/impala_alter_table.xml
File docs/topics/impala_alter_table.xml:

Line 182:         in the <codeph>COMPUTE STATS</codeph> statement.
COMPUTE INCREMENTAL STATS only (the PARTITION clause does not apply to COMPUTE STATS)


Line 183:         Some forms of <codeph>ALTER TABLE</codeph> still only apply
to one partition
The new partition selection logic also works for SHOW FILES IN <tbl> PARTITION (...)


Line 200:         large numbers of partitions.
Mmention IMPALA-4106 as a known scalability limitation, typically these bulk operations should
be more efficient than doing multiple ALTER TABLE statements in quick succession.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I2060552d5081e5f93b1b1f398414c52fa03f215b
Gerrit-PatchSet: 4
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: John Russell <jrussell@cloudera.com>
Gerrit-Reviewer: Alex Behm <alex.behm@cloudera.com>
Gerrit-Reviewer: Amos Bird <amosbird@gmail.com>
Gerrit-Reviewer: John Russell <jrussell@cloudera.com>
Gerrit-HasComments: Yes

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