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From st...@duboce.net
Subject Review Request: hbase-2617 pathological balancer
Date Thu, 27 May 2010 17:13:15 GMT

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Review request for hbase and Ryan Rawson.


Fix for pathological balancer.  Mostly logging changes to remove confusion as to what the
balancer is up to but also removed a mistake where we'd always give a server one region ('just
in case") if regions to assign though it might be a server that is loaded.  In clusters w/
lots of nodes with a few of the nodes not in-balance, the lightly loaded nodes would never
get regions so we'd just keep reassigning and never settle.

This addresses bug hbase-2617.


  branches/0.20/src/java/org/apache/hadoop/hbase/master/RegionManager.java 948860 

Diff: http://review.hbase.org/r/97/diff




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