[kudu-CR] rpc: Add min / max negotiation threads

["Mike Percy (Code Review)" <ge...@cloudera.org>]

Hello Kudu Jenkins,

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

    http://gerrit.cloudera.org:8080/4574

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

Change subject: rpc: Add min / max negotiation threads
......................................................................

rpc: Add min / max negotiation threads

Since we use a thread pool for connection negotiation, it would be
helpful for users to be able to specify the minimum and maximum number
of threads in that pool. Prior to this patch, there were no gflags to
control these parameters, and the only builder parameter was the maximum
(however it was not labelled as such).

This allows tuning of the per-tserver negotiation pool size, both
minimum and maximum threads to allow in the thread pool.

Change-Id: Ife98b39d5f3a340702151ab27dc8026c8bac12ac
---
M src/kudu/integration-tests/create-table-stress-test.cc
M src/kudu/integration-tests/external_mini_cluster.cc
M src/kudu/rpc/messenger.cc
M src/kudu/rpc/messenger.h
M src/kudu/server/server_base.cc
5 files changed, 30 insertions(+), 10 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/74/4574/2
-- 
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ife98b39d5f3a340702151ab27dc8026c8bac12ac
Gerrit-PatchSet: 2
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Mike Percy <mp...@apache.org>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>