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From "Aleksandr Kovalenko (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-2934) NameNode HA Wizard: hardening
Date Fri, 16 Aug 2013 15:29:48 GMT
Aleksandr Kovalenko created AMBARI-2934:
-------------------------------------------

             Summary: NameNode HA Wizard: hardening
                 Key: AMBARI-2934
                 URL: https://issues.apache.org/jira/browse/AMBARI-2934
             Project: Ambari
          Issue Type: Task
          Components: client
    Affects Versions: 1.4.0
            Reporter: Aleksandr Kovalenko
            Assignee: Aleksandr Kovalenko
             Fix For: 1.4.0


Assume that every API call can fail.  We need a reliable error handling and retry  mechanism.
 Upon an API call failure, we let the user retry the last task that failed.
Page refreshes need to be handled.  At any point in time, the user should be able to hit refresh
and not cause adverse affects. 
Checkpoint at appropriate points using the "persist" call, so that we know what API calls
have been executed already and we don't call them again.

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