Andrew Wong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/12462 )

Change subject: KUDU-2690: don't roll log schema on failed alter
......................................................................


Patch Set 6:

(3 comments)

http://gerrit.cloudera.org:8080/#/c/12462/6//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/12462/6//COMMIT_MSG@25
PS6, Line 25: use
> uses
Done


http://gerrit.cloudera.org:8080/#/c/12462/6/src/kudu/tablet/tablet_bootstrap.cc
File src/kudu/tablet/tablet_bootstrap.cc:

http://gerrit.cloudera.org:8080/#/c/12462/6/src/kudu/tablet/tablet_bootstrap.cc@1458
PS6, Line 1458:   // 3. The commit message contains a 'result', which should 
only happen if the
              :   //    alter resulted in a failure. Exit out without 
attempting the alter.
> AlterSchemas aren't very common, so maybe we should follow the convention o
Clarifying the behavior of writes:
- if there is an error, record it
- if not, record the memstore that the operation affected

AFAICT this is done out of necessity; I don't think there is a need to do so 
for alters.

>do we do the same for ChangeConfig?
No, the commit message is untouched during replay for ChangeConfig and NoOps, 
and AFAICT they don't have any results.


http://gerrit.cloudera.org:8080/#/c/12462/6/src/kudu/tablet/tablet_replica-test.cc
File src/kudu/tablet/tablet_replica-test.cc:

http://gerrit.cloudera.org:8080/#/c/12462/6/src/kudu/tablet/tablet_replica-test.cc@137
PS6, Line 137:     scoped_refptr<ConsensusMetadataManager> cmeta_manager(
> Could we store this so that your new test needn't recreate it as part of th
Done



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Id761851741297e29a4666bec0c34fc4f7285f715
Gerrit-Change-Number: 12462
Gerrit-PatchSet: 6
Gerrit-Owner: Andrew Wong <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Andrew Wong <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Reviewer: Todd Lipcon <[email protected]>
Gerrit-Comment-Date: Wed, 20 Feb 2019 00:17:50 +0000
Gerrit-HasComments: Yes

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