[kudu-CR] KUDU-1317 (part 2): decay the replica creation load on TS lazily

["Todd Lipcon (Code Review)" <ge...@ip-10-146-233-104.ec2.internal>]

Hello Jean-Daniel Cryans, Binglin Chang, Adar Dembo,

I'd like you to do a code review.  Please visit

    http://gerrit.cloudera.org:8080/1979

to review the following change.

Change subject: KUDU-1317 (part 2): decay the replica creation load on TS lazily
......................................................................

KUDU-1317 (part 2): decay the replica creation load on TS lazily

This is a follow-up in response to a review by Binglin[1] suggesting
that the load value for TS Descriptors should be decayed on access
instead of in a background loop. This also adds a new test verifying
the behavior.

[1] http://gerrit.cloudera.org:8080/1654 which

Change-Id: I15899b8bf221f334fdec5983e1b5d93cc57fab3b
---
M src/kudu/master/catalog_manager-test.cc
M src/kudu/master/catalog_manager.cc
M src/kudu/master/master-test.cc
M src/kudu/master/ts_descriptor.cc
M src/kudu/master/ts_descriptor.h
5 files changed, 63 insertions(+), 33 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/79/1979/1
-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I15899b8bf221f334fdec5983e1b5d93cc57fab3b
Gerrit-PatchSet: 1
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Todd Lipcon <to...@apache.org>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Binglin Chang <de...@gmail.com>
Gerrit-Reviewer: Jean-Daniel Cryans