Alexey Serbin has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/12366


Change subject: [tools] --load_imbalance_threshold flag for LA rebalancer
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[tools] --load_imbalance_threshold flag for LA rebalancer

Introduced the '--load_imbalance_threshold' run-time flag
for the Kudu CLI rebalancer tool.

The threshold represents a policy policy with regard to what to
prefer during cross-location rebalancing: ideal balance of the
cross-location load on per-table basis (lower threshold value)
or minimum number of replica moves between locations
(greater threshold value).

A follow-up changelist adds a basic test to excerise the new
functionality along with other tests.

Change-Id: I81867f168dac9908a701b50205be7bfaacefd554
---
M src/kudu/tools/rebalance_algo-test.cc
M src/kudu/tools/rebalance_algo.cc
M src/kudu/tools/rebalance_algo.h
M src/kudu/tools/rebalancer.cc
M src/kudu/tools/rebalancer.h
M src/kudu/tools/tool_action_cluster.cc
6 files changed, 64 insertions(+), 24 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/66/12366/1
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I81867f168dac9908a701b50205be7bfaacefd554
Gerrit-Change-Number: 12366
Gerrit-PatchSet: 1
Gerrit-Owner: Alexey Serbin <[email protected]>

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