[kudu-CR] [maintenance] Support priorities for tables in MM compaction

["Yingchun Lai (Code Review)" <ge...@cloudera.org>]

Hello Will Berkeley, Kudu Jenkins, Adar Dembo, Todd Lipcon, 

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/12852

to look at the new patch set (#2).

Change subject: [maintenance] Support priorities for tables in MM compaction
......................................................................

[maintenance] Support priorities for tables in MM compaction

This commit add a feature to specify different priorities for table compaction.

In a Kudu cluster with thousands of tables, it's hard for a specified tablet's
maintenance OPs to be launched when their scores are not the highest, even if
the table the tablet belongs to is high priority for Kudu users. This patch
allow administators to specify different priorities for tables by gflags, these
maintenance OPs of these high priority tables have greater chance to be launched.

Change-Id: I3ea3b73505157678a8fb551656123b64e6bfb304
---
M src/kudu/tablet/tablet.h
M src/kudu/tablet/tablet_metadata.h
M src/kudu/tablet/tablet_mm_ops-test.cc
M src/kudu/tablet/tablet_mm_ops.cc
M src/kudu/tablet/tablet_mm_ops.h
M src/kudu/tablet/tablet_replica.cc
M src/kudu/tablet/tablet_replica.h
M src/kudu/tablet/tablet_replica_mm_ops.cc
M src/kudu/tablet/tablet_replica_mm_ops.h
M src/kudu/util/maintenance_manager-test.cc
M src/kudu/util/maintenance_manager.cc
M src/kudu/util/maintenance_manager.h
M src/kudu/util/maintenance_manager.proto
13 files changed, 402 insertions(+), 153 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/52/12852/2
-- 
To view, visit http://gerrit.cloudera.org:8080/12852
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I3ea3b73505157678a8fb551656123b64e6bfb304
Gerrit-Change-Number: 12852
Gerrit-PatchSet: 2
Gerrit-Owner: Yingchun Lai <40...@qq.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>
Gerrit-Reviewer: Will Berkeley <wd...@gmail.com>
Gerrit-Reviewer: Yingchun Lai <40...@qq.com>