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https://issues.apache.org/jira/browse/HAWQ-971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shivram Mani updated HAWQ-971:
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Description:
Most of the data formats on HDFS don't support projecting specific columns. For
such formats we can still avoid resolving every individual field in the record
and instead only resolve fields that need to be projected and send NULLs for
other fields.
This task specifically focusses on improving the performance of Hive PXF
profile which positively impacts both Hive and HiveORC profile
was:Most of the data formats on HDFS don't support projecting specific
columns. For such formats we can still avoid resolving every individual field
in the record and instead only resolve fields that need to be projected and
send NULLs for other fields.
> Update PXF Hive Resolver to return partial content
> --------------------------------------------------
>
> Key: HAWQ-971
> URL: https://issues.apache.org/jira/browse/HAWQ-971
> Project: Apache HAWQ
> Issue Type: Sub-task
> Components: PXF
> Reporter: Shivram Mani
> Assignee: Shivram Mani
> Fix For: backlog
>
>
> Most of the data formats on HDFS don't support projecting specific columns.
> For such formats we can still avoid resolving every individual field in the
> record and instead only resolve fields that need to be projected and send
> NULLs for other fields.
> This task specifically focusses on improving the performance of Hive PXF
> profile which positively impacts both Hive and HiveORC profile
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