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https://issues.apache.org/jira/browse/TEZ-2134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14336852#comment-14336852
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Prakash Ramachandran commented on TEZ-2134:
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[~Sreenath] patch looks good. one question though, prefilters fire before the 
beforesend event - so in case the url is modified in beforesend event - this 
would not be visible in the error message? 
eg. ambari proxying the url - I believe it would show 
http://timelineserver/entitypath instead of 
http://ambari/path?proxy=http://timelineserver/entitypath ?
is this expected?

> TEZ UI - On request failure, display request URL and server name in error bar.
> ------------------------------------------------------------------------------
>
>                 Key: TEZ-2134
>                 URL: https://issues.apache.org/jira/browse/TEZ-2134
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Sreenath Somarajapuram
>            Assignee: Sreenath Somarajapuram
>         Attachments: TEZ-2134.1.patch, TEZ-2134.2.patch
>
>
> Adding simple text such as "Could not retrieve data from Timeline Server 
> x.y.z:8188" would be way more useful.



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