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From "Vinod Kumar Vavilapalli (JIRA)" <>
Subject [jira] [Updated] (AMBARI-286) Make TxnProgressWidget Immune To Re-Fetch Race Conditions
Date Wed, 04 Jul 2012 21:54:49 GMT


Vinod Kumar Vavilapalli updated AMBARI-286:

    Affects Version/s:     (was: ambari-186)
> Make TxnProgressWidget Immune To Re-Fetch Race Conditions
> ---------------------------------------------------------
>                 Key: AMBARI-286
>                 URL:
>             Project: Ambari
>          Issue Type: Bug
>    Affects Versions: 0.9.0
>            Reporter: Varun Kapoor
>            Assignee: Varun Kapoor
>            Priority: Critical
>             Fix For: 0.9.0
>         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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