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From "Aleksandr Kovalenko (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-2934) NameNode HA Wizard: hardening
Date Fri, 16 Aug 2013 15:31:47 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-2934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aleksandr Kovalenko updated AMBARI-2934:
----------------------------------------

    Attachment: AMBARI-2934.patch
    
> 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
>
>         Attachments: AMBARI-2934.patch
>
>
> 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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