[kudu-CR] server: move apply pool into ServerBase

["Adar Dembo (Code Review)" <ge...@cloudera.org>]

Hello Alexey Serbin, Kudu Jenkins,

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

    http://gerrit.cloudera.org:8080/6984

to look at the new patch set (#5).

Change subject: server: move apply_pool into ServerBase
......................................................................

server: move apply_pool into ServerBase

The server-wide apply_pool was instantiated in two places: SysCatalogTable
(for the master) and TsTabletManager (for the tserver). This commit moves it
into ServerBase and unifies the instantiation. Note: the apply pool
semantics have not changed.

Some interesting side effects:
1. The master will now generate apply pool metrics.
2. The apply pool is shut down a little bit later in server shutdown than it
   was before, though I don't see any issues with this.

Change-Id: Ie7ffc886269aa6531517a52fef29c4408a925aed
---
M src/kudu/master/catalog_manager.cc
M src/kudu/master/sys_catalog.cc
M src/kudu/master/sys_catalog.h
M src/kudu/server/server_base.cc
M src/kudu/server/server_base.h
M src/kudu/tserver/tablet_server.cc
M src/kudu/tserver/ts_tablet_manager.cc
M src/kudu/tserver/ts_tablet_manager.h
8 files changed, 48 insertions(+), 58 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/84/6984/5
-- 
To view, visit http://gerrit.cloudera.org:8080/6984
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ie7ffc886269aa6531517a52fef29c4408a925aed
Gerrit-PatchSet: 5
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Dan Burkert <da...@apache.org>
Gerrit-Reviewer: David Ribeiro Alves <da...@gmail.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Tidy Bot
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>