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From "Jason Altekruse (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-1260) Embedded Type Vector
Date Tue, 05 Aug 2014 23:37:12 GMT
Jason Altekruse created DRILL-1260:
--------------------------------------

             Summary: Embedded Type Vector
                 Key: DRILL-1260
                 URL: https://issues.apache.org/jira/browse/DRILL-1260
             Project: Apache Drill
          Issue Type: Sub-task
            Reporter: Jason Altekruse


Value vectors currently have a single type for all of the values they contain. This enforces
that the schema within a single record batch be constant, thus we cannot support changing
the type of a column without starting a new batch. In cases where the schema changes frequently
this does not provide enough flexibility for storing and processing records. For this case
we will eventually be extending out Value Vector model with a new Embedded Type vector, which
will have type information associated with individual values within a batch rather than applied
to all values.



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