Mahadev konar created AMBARI-15294:
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Summary: HBase RegionServer circular decommission
Key: AMBARI-15294
URL: https://issues.apache.org/jira/browse/AMBARI-15294
Project: Ambari
Issue Type: Bug
Affects Versions: 2.2.1
Reporter: Mahadev konar
rovision a cluster with the attached blueprint with more than 2 hosts in the
host_group_slave_1 host group. Put a few RegionServers to maintenance mode and
try to decommission one of the RSs. It will try to find valid targets to move
the data to, but it includes RSs in maintenance mode.
In case of larger number of decommission like 20, it leads to circular data
movements as RSs which are decommissioning will copy their data to other RSs
which are also decommissioning.
In the log you can see the selected targets and 80% of them is in maintenance
mode. 15 nodes decommission 1 RS.
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