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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "Hive/Roadmap" by ZhengShao
Date Fri, 29 Aug 2008 01:42:51 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The following page has been changed by ZhengShao:
http://wiki.apache.org/hadoop/Hive/Roadmap

------------------------------------------------------------------------------
  #pragma section-numbers 2
  = Roadmap/call to add more features =
  The following is the list of useful features that are on the Hive Roadmap:
-  * Multiple Group-By Inserts
+   * Multiple group-by inserts
- <code>
- FROM src
+     * Generate multiple group-by results by scanning the source table only once
+     * Example:
+       * FROM src
- SELECT src.adid, COUNT(src.userid), COUNT(DISTINCT src.userid) GROUP BY src.adid
+       * SELECT src.adid, COUNT(src.userid), COUNT(DISTINCT src.userid) GROUP BY src.adid
- SELECT src.pageid, COUNT(src.userid), COUNT(DISTINCT src.userid) GROUP BY src.pageid
+       * SELECT src.pageid, COUNT(src.userid), COUNT(DISTINCT src.userid) GROUP BY src.pageid
- </code>
+   * SerDe refactoring, and DynamicSerDe
+     * Refactor SerDe library to make sure we can serialize/deserialize and let UDF handle
complex objects.
+     * We will be able to write a Hive Query to write data into a table that uses thrift
serialization.
  

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