Alexey Serbin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/11869 )

Change subject: [compaction] KUDU-1400: Improve rowset compaction policy to 
consider merging small DRSs
......................................................................


Patch Set 4:

(2 comments)

Looked a bit into the code, so far just a few nits.  I don't understand the 
whole picture yet, but I'll try to digest the design doc and look once more 
over the weekend.

http://gerrit.cloudera.org:8080/#/c/11869/4/src/kudu/tablet/compaction_policy.cc
File src/kudu/tablet/compaction_policy.cc:

http://gerrit.cloudera.org:8080/#/c/11869/4/src/kudu/tablet/compaction_policy.cc@126
PS4, Line 126: const RowSetInfo*
nit: not related to this particular patch, but if item_type is typedef'ed, why 
not to use it in the signature of get_weight() and get_value() functions?


http://gerrit.cloudera.org:8080/#/c/11869/4/src/kudu/tablet/rowset_info.cc
File src/kudu/tablet/rowset_info.cc:

http://gerrit.cloudera.org:8080/#/c/11869/4/src/kudu/tablet/rowset_info.cc@65
PS4, Line 65: compaction_small_rowset_tradeoff
nit: is it worth marking this flag with the 'runtime' tag?



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I7b421c6ed77d28ebab9b91a4d6fcb1e825997e6c
Gerrit-Change-Number: 11869
Gerrit-PatchSet: 4
Gerrit-Owner: Will Berkeley <wdberke...@gmail.com>
Gerrit-Reviewer: Adar Dembo <a...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Andrew Wong <aw...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Will Berkeley <wdberke...@gmail.com>
Gerrit-Comment-Date: Fri, 09 Nov 2018 01:39:17 +0000
Gerrit-HasComments: Yes

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