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From "Ning Zhang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-1648) Automatically gathering stats when reading a table/partition
Date Thu, 16 Sep 2010 22:26:32 GMT
Automatically gathering stats when reading a table/partition
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                 Key: HIVE-1648
                 URL: https://issues.apache.org/jira/browse/HIVE-1648
             Project: Hadoop Hive
          Issue Type: New Feature
            Reporter: Ning Zhang


HIVE-1361 introduces a new command 'ANALYZE TABLE T COMPUTE STATISTICS' to gathering stats.
This requires additional scan of the data. Stats gathering can be piggy-backed on TableScanOperator
whenever a table/partition is scanned (given not LIMIT operator). 

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