You can remove a RegionServer by moving it to the default rsgroup.
Edits made using shell commands to all rsgroups, except the default
rsgroup, are persisted to the system hbase:rsgroup table. If an rsgroup
references a decommissioned RegionServer, then the rsgroup should be updated to undo the
reference.
-
Move the RegionServer to the default rsgroup using the command:
$hbase> move_servers_rsgroup
'default',['server1:port'].
-
Check the list of RegionServers in your rsgourp to ensure that that the
RegionServer is successfully removed using the command:
$hbase>
get_rsgroup 'mygroup’
The default rsgroup's RegionServer list mirrors the current state of the
cluster. If you shut down a RegionServer that was part of the
default rsgroup, and then run the get_rsgroup
'default' command to list its content in the shell, the server
is no longer listed. If you move the offline server from the non-default
rsgroup to default, it will not show in the
default list; the server will just be removed from the
list.
