[jira] Updated: (CHUKWA-506) Add retry logic to MetricDataLoader

["William Bajzek (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CHUKWA-506?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

William Bajzek updated CHUKWA-506:
----------------------------------

    Attachment: postProcessorRetry.patch

A patch which implements this. I have tested it out by starting chukwa, shutting down MySQL, and then submitting a job. after the SQLException appeared in the postprocessor.log, I restarted MySQL and waited. The next time the postprocessor ran, the data was correctly inserted into the database.

Unfortunately, I can't get the unit tests to pass even with an unchanged, freshly checked out copy of chukwa. They worked for me the other day, but not now, but I was told on chukwa-dev to submit the patch for review anyway. 

> Add retry logic to MetricDataLoader
> -----------------------------------
>
>                 Key: CHUKWA-506
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-506
>             Project: Chukwa
>          Issue Type: Improvement
>    Affects Versions: 0.4.0
>            Reporter: William Bajzek
>            Priority: Minor
>         Attachments: postProcessorRetry.patch
>
>
> When processing data in Chukwa, many steps along the way, when the encounter an error condition, will attempt to reprocess the data a few times before giving up. This doesn't happen in post processing (at least when using MetricDataLoader); for example if there is a SQLException of any kind, it will move the data to the "inError" directory at which point it becomes AFAIK a manual process to move the data back to be reprocessed, so it would be nice to retry a few times in case the exception was transient (database was being bounced, or similar). 
> I will attach a patch to be reviewed.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.