[HDFS-9357] NN UI renders icons of decommissioned DN incorrectly

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Hadoop Flags: Reviewed
• Assignee: Surendra Singh Lilhore
• Reporter: Archana T
• Created: 02/Nov/15 07:05
• Updated: 27/Feb/18 17:49
• Resolved: 04/Nov/15 17:17

Description

NN UI is not showing which DN is "Decommissioned "and "Decommissioned & dead"

Root Cause –
"Decommissioned" and "Decommissioned & dead" icon not reflected on NN UI

When DN is in Decommissioned status or in "Decommissioned & dead" status, same status is not reflected on NN UI

DN status is as below –

hdfs dfsadmin -report

Name: 10.xx.xx.xx1:50076 (host-xx1)
Hostname: host-xx
Decommission Status : Decommissioned
Configured Capacity: 230501634048 (214.67 GB)
DFS Used: 36864 (36 KB)

Dead datanodes (1):
Name: 10.xx.xx.xx2:50076 (host-xx2)
Hostname: host-xx
Decommission Status : Decommissioned

Same is not reflected on NN UI.

Attached NN UI snapshots for the same.

Issue Links

• breaks: HDFS-13199 RBF: Fix the hdfs router page missing label icon issue
• relates to: HDFS-8816 Improve visualization for the Datanode tab in the NN UI