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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