[HDFS-7874] Even-though rollback image is created, after restarting namenode with "rollingUpgrade started" option , createdRollbackImages is set to false.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Implemented
• Labels: BB2015-05-RFC
• Assignee: J.Andreina
• Reporter: J.Andreina
• Created: 03/Mar/15 10:13
• Updated: 03/Jun/15 05:34
• Resolved: 03/Jun/15 05:34

Description

Step 1: Prepare rolling upgrade using "hdfs dfsadmin -rollingUpgrade prepare" . Rollback image will be created and UI displays as follows

Rolling upgrade started at 3/3/2015, 11:47:03 AM. 
Rollback image has been created. Proceed to upgrade daemons.

Step 2: Shutdown SNN and NN
Step 3: Start NN with the "hdfs namenode -rollingUpgrade started" option.

Issue:
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Eventhough rollback image exist, restarting namenode with "rollingUpgrade started" option, on UI "rollback image not created" is displayed.

Rolling upgrade started at 3/3/2015, 11:47:03 AM. 
Rollback image has not been created.