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From "Aleksandr Kovalenko (JIRA)" <>
Subject [jira] [Updated] (AMBARI-7220) Ambari NN HA wizard cannot detect checkpoint
Date Tue, 09 Sep 2014 14:10:28 GMT


Aleksandr Kovalenko updated AMBARI-7220:
    Attachment: AMBARI-7220.patch

> Ambari NN HA wizard cannot detect checkpoint
> --------------------------------------------
>                 Key: AMBARI-7220
>                 URL:
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-web
>    Affects Versions: 1.7.0
>            Reporter: Aleksandr Kovalenko
>            Assignee: Aleksandr Kovalenko
>             Fix For: 1.7.0
>         Attachments: AMBARI-7220.patch
> 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
> 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.

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