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From "Adam Kramer (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-1263) Is it time for INSERT APPEND?
Date Sat, 20 Mar 2010 21:58:28 GMT
Is it time for INSERT APPEND?
-----------------------------

                 Key: HIVE-1263
                 URL: https://issues.apache.org/jira/browse/HIVE-1263
             Project: Hadoop Hive
          Issue Type: New Feature
            Reporter: Adam Kramer


It seems to me that for someone who did not want to wipe an existing table but just wanted
to add rows to it, that an INSERT APPEND may be desirable. I would expect that the mechanism
by which this would take place is the whole normal mapreduce step as if an OVERWRITE were
taking place, but the end result would be adding files to the hdfs directory rather than wiping
the directory and replacing it with a new one.

Or failing that, INSERT APPEND could be syntactic sugar for an INSERT OVERWRITE on the same
table, but with the SELECT statement replaced with the user-specified SELECT and UNION ALL'd
on select * for the existing table...which is my current workaround, but seems like an inelegant
query.

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