Jerry He created HBASE-19021:
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Summary: Restore a few important missing logics for balancer in 2.0
Key: HBASE-19021
URL: https://issues.apache.org/jira/browse/HBASE-19021
Project: HBase
Issue Type: Bug
Reporter: Jerry He
Assignee: Jerry He
Priority: Critical
After looking at the code, and some testing, I see the following things are
missing for balancer to work properly after AMv2.
# hbase.master.loadbalance.bytable is not respected. It is always 'bytable'.
Previous default is cluster wide, not by table.
# Servers with no assignments is not added for balance consideration.
# Crashed server is not removed from the in-memory server map in RegionStates,
which affects balance.
# Draining marker is not respected when balance.
Also try to re-enable {{TestRegionRebalancing}}, which has a
{{testRebalanceOnRegionServerNumberChange}}
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