[AMBARI-7220] Ambari NN HA wizard cannot detect checkpoint

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.7.0
• Fix Version/s: 1.7.0
• Component/s: ambari-web
• Assignee: Aleksandr Kovalenko
• Reporter: Aleksandr Kovalenko
• Created: 09/Sep/14 14:07
• Updated: 09/Sep/14 14:45
• Resolved: 09/Sep/14 14:13

Description

PROBLEM: When enabling Namenode High Availability in Ambari, at the first step :"run "su -l hdfs -c 'hdfs dfsadmin -safemode enter'"
run "su -l hdfs -c 'hdfs dfsadmin -saveNamespace'" "

Ambari cannot detect the checkpoint has been created and would not allow user to go to next step.

BUSINESS IMPACT: This bug is preventing customer to enable High Availability and customer is not able to avoid the single point of failure of their business.

ACTUAL BEHAVIOR: The "Next Step" button is not available and user cannot go to next step.
EXPECTED BEHAVIOR: After creating checkpoint, Ambari should detect the checkpoint and allow user to proceed to the next step.

SUPPORT ANALYSIS: A possible workaround would be copy the link of checking checkpoint status, and access this link through a different browser.

The customer use the following steps as a workaround:
After leaving safe mode manually, then refreshing Ambari and starting wizard again, it say "Checkpoint created" even before entering safe mode again.