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From "Keith Turner (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-1732) Resolve table name to table id once in Accumulo input format
Date Tue, 24 Sep 2013 02:23:02 GMT
Keith Turner created ACCUMULO-1732:
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             Summary: Resolve table name to table id once in Accumulo input format
                 Key: ACCUMULO-1732
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1732
             Project: Accumulo
          Issue Type: Bug
    Affects Versions: 1.4.0
            Reporter: Keith Turner


AccumuloInputFormat (and I suspect AccumuloOutputFormat) sends the table name to each mapper.
 The mapper uses this table name to create a scanner.  In the case of the following events
a map reduce job could read from two different table ids.   

 # start M/R job reading table A
 # rename table A (tableId=1) to table C
 # rename table B (tableId=2) to table A

If the input format passed table id 1 to the mappers, then the renames would not cause a problem.

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