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Posted to dev@hawq.apache.org by "Kavinder Dhaliwal (JIRA)" <ji...@apache.org> on 2016/07/14 23:04:20 UTC

[jira] [Created] (HAWQ-927) Send Projection Info Data from HAWQ to PXF

Kavinder Dhaliwal created HAWQ-927:
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             Summary: Send Projection Info Data from HAWQ to PXF
                 Key: HAWQ-927
                 URL: https://issues.apache.org/jira/browse/HAWQ-927
             Project: Apache HAWQ
          Issue Type: Sub-task
          Components: External Tables
            Reporter: Kavinder Dhaliwal
            Assignee: Lei Chang


To achieve column projection at the level of PXF or the underlying readers we need to first send this data as a Header/Param to PXF. Currently, PXF has no knowledge whether a query requires all columns or a subset of columns.



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