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Posted to dev@ambari.apache.org by "Varun Kapoor (JIRA)" <ji...@apache.org> on 2012/05/21 04:35:40 UTC

[jira] [Updated] (AMBARI-286) Make TxnProgressWidget Immune To Re-Fetch Race Conditions

     [ https://issues.apache.org/jira/browse/AMBARI-286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Varun Kapoor updated AMBARI-286:
--------------------------------

    Attachment: AMBARI-286.patch
    
> Make TxnProgressWidget Immune To Re-Fetch Race Conditions
> ---------------------------------------------------------
>
>                 Key: AMBARI-286
>                 URL: https://issues.apache.org/jira/browse/AMBARI-286
>             Project: Ambari
>          Issue Type: Bug
>    Affects Versions: ambari-186
>            Reporter: Varun Kapoor
>            Assignee: Varun Kapoor
>            Priority: Critical
>             Fix For: ambari-186
>
>         Attachments: AMBARI-286.patch
>
>   Original Estimate: 4h
>  Remaining Estimate: 4h
>
> There's a bunch of severe rendering problems that stem from the TxnProgressWidget periodically polling its backend data source at fixed intervals, regardless of whether the previous fetch is actually done.
> Now that we have post-processors for fetchTxnProgress.php (buried deep within AMBARI-249), this has become even more severe because our post-processing script potentially triggers background jobs (that should run just once) more than once, so this needs to be fixed ASAP.

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