Decommission a RegionServer

Use Ambari Web > Hosts > Actions to decommission a RegionServer component.

1. Using Ambari Web, browse the Hosts page.
2. Find and click the FQDN of the host on which the RegionServer component resides.
3. Using the Actions menu, click Selected Hosts > RegionServers > Decommission.
   
   
   
   The UI shows Decommissioning status while in process.

When this RegionServer decommissioning process is finished, the Action option shows Recommission.