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From "Eric Yang (JIRA)" <>
Subject [jira] Created: (CHUKWA-316) jobconf Error in mr_job_* table
Date Fri, 19 Jun 2009 18:30:07 GMT
jobconf Error in mr_job_* table

                 Key: CHUKWA-316
             Project: Hadoop Chukwa
          Issue Type: Bug
          Components: Data Processors
    Affects Versions: 0.2.0
         Environment: Redhat EL 5,1, Java 6
            Reporter: Eric Yang
            Assignee: Eric Yang
            Priority: Blocker

The current mr_job table, jobconf columns contains the content of jobconf for some rows, and
other rows contains the
path of the jobconf.

In the sequence file, jobconf is the field for location of the jobconf path.  The content
of the jobconf is
JOBCONF-JSON.  In database table, jobconf is the content of the jobconf.  Unfortunately, the
new automatic mapping will
detect sequence file "jobconf" field is a match with "jobconf" column in the database.  Hence
last update wins.

To work around this problem, we need ability to undefine sequence file field to match to database

Personally, I think indirect data translation mapping is the wrong thing to do.  The mapping
should be as straight forward as possible.

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