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From "Shreepadma Venugopalan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-3526) Column Statistics - Add support for equi-height histograms on numeric columns
Date Wed, 03 Oct 2012 22:09:08 GMT
Shreepadma Venugopalan created HIVE-3526:
--------------------------------------------

             Summary: Column Statistics - Add support for equi-height histograms on numeric
columns
                 Key: HIVE-3526
                 URL: https://issues.apache.org/jira/browse/HIVE-3526
             Project: Hive
          Issue Type: Bug
          Components: Statistics
    Affects Versions: 0.10.0
            Reporter: Shreepadma Venugopalan
            Assignee: Shreepadma Venugopalan


This JIRA covers the task of adding support for equi-height histograms on numeric columns
in Hive tables and partitions. This task involves a) implementing a UDAF to compute equi-height
histograms on numeric columns, b) persisting the histogram to the metastore along with other
column statistics , c) enhancing the thrift api to retrieve the histogram along with the other
statistics and d) extending the grammar of ANALYZE to allow the user to request histograms
and specify the number of bins.

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