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From Eric Yang <>
Subject Re: What to do after database failures?
Date Fri, 23 Jul 2010 20:51:47 GMT
On 7/23/10 1:17 PM, "William Bajzek" <> wrote:

> On Jul 23, 2010, at 9:58 AM, Eric Yang wrote:
>> MetricDataLoader can be modified to throw IOException to the executor class
>> MetricDataLoaderPool, which can throw exception to PostProcessor Manager.
>> PostProcessorManager moves the data to a temp directory.  The retry logic
>> can be added to PostProcessorManager by counting the number of retry with
>> the error out sequence file before sending it to InError directory.  It
>> should be the better route to manages error conditions.
> I'll look into this, thanks. Other than that, is the only recourse to move the
> failed material back into the queue manually?

Yes.  This page contains some useful information on the data flow:

In 3.3, it moves from demuxProcessing to postProcess directory.  If it
fails, move the data to demuxProcessing directory again and
PostProcessorManager will pick up the directory again and attempt to load


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