[jira] [Created] (HBASE-24102) RegionMover should exclude draining/decommissioning nodes from target RSs

["Anoop Sam John (Jira)" <ji...@apache.org>]

Anoop Sam John created HBASE-24102:
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             Summary: RegionMover should exclude draining/decommissioning nodes from target RSs
                 Key: HBASE-24102
                 URL: https://issues.apache.org/jira/browse/HBASE-24102
             Project: HBase
          Issue Type: Improvement
            Reporter: Anoop Sam John
             Fix For: 3.0.0, 2.4.0


When using RegionMover tool to unload the regions from a given RS, it decides the list of destination RSs by 
{code}
List<ServerName> regionServers = new ArrayList<>();
        regionServers.addAll(admin.getRegionServers());
        // Remove the host Region server from target Region Servers list
        ServerName server = stripServer(regionServers, hostname, port);
        .....
        // Remove RS present in the exclude file
        stripExcludes(regionServers);
        stripMaster(regionServers);
{code}
Ya it is removing the RSs mentioned in the excludes list.  
Better when the RegionMover user is mentioning any exclude list, we can exlcude the draining/decommissioning RSs
Admin#listDecommissionedRegionServers()



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