Hello Tidy Bot, Yingchun Lai, Kudu Jenkins,

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

    http://gerrit.cloudera.org:8080/18679

to look at the new patch set (#19).

Change subject: [master] support turn on/off auto rebalancer at runtime
......................................................................

[master] support turn on/off auto rebalancer at runtime

kudu-master has supported auto-rebalancer, but it must be decided whether
enable it before kudu master starting.

This patch supports to use gflag --auto_rebalancing_enabled to control
whether turn on/off auto-rebalancer when running.

There are many independent, idle and isolated threads(which do period tasks)
they don't participant in threadpool. We can use less threads, unified 
threadpool
to manager them. Easily logic codes and unified code style after more deeper
refactoring. The patch is the first refacting attempt.

Change-Id: Ifbcea6392b783843f89e019f1141dd8905366de5
---
M src/kudu/master/auto_rebalancer.cc
M src/kudu/master/auto_rebalancer.h
M src/kudu/master/catalog_manager.cc
M src/kudu/master/catalog_manager.h
M src/kudu/util/threadpool-test.cc
M src/kudu/util/threadpool.cc
6 files changed, 149 insertions(+), 76 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/79/18679/19
--
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ifbcea6392b783843f89e019f1141dd8905366de5
Gerrit-Change-Number: 18679
Gerrit-PatchSet: 19
Gerrit-Owner: Yuqi Du <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Reviewer: Yingchun Lai <[email protected]>
Gerrit-Reviewer: Yuqi Du <[email protected]>

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