Alexey Serbin has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/12634


Change subject: [master] introduce cache for location mapping assignments
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[master] introduce cache for location mapping assignments

This changelist adds a very primitive cache for location assignments.
The cache does not prevent running multiple commands for the same
location key if an entry is not present in the cache.

A unit test is also added.

Change-Id: Icb5c436c9433acd87c44c4d81982420f33ebb4a4
---
A src/kudu/master/location_cache-test.cc
A src/kudu/master/location_cache.cc
A src/kudu/master/location_cache.h
3 files changed, 420 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/34/12634/1
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Icb5c436c9433acd87c44c4d81982420f33ebb4a4
Gerrit-Change-Number: 12634
Gerrit-PatchSet: 1
Gerrit-Owner: Alexey Serbin <[email protected]>

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