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From sansanichfb <...@git.apache.org>
Subject [GitHub] incubator-hawq-docs pull request #126: HAWQ-1491 - create usage docs for Hiv...
Date Tue, 27 Jun 2017 23:40:56 GMT
Github user sansanichfb commented on a diff in the pull request:

    https://github.com/apache/incubator-hawq-docs/pull/126#discussion_r124423088
  
    --- Diff: markdown/pxf/HivePXF.html.md.erb ---
    @@ -495,9 +500,16 @@ Use the `HiveORC` profile to access ORC format data. The `HiveORC`
profile provi
         - `=`, `>`, `<`, `>=`, `<=`, `IS NULL`, and `IS NOT NULL` operators and
comparisons between the `float8` and `float4` types
         - `IN` operator on arrays of `int2`, `int4`, `int8`, `boolean`, and `text`
     
    -- Complex type support - You can access Hive tables composed of array, map, struct, and
union data types. PXF serializes each of these complex types to `text`.
    +When choosing an ORC-supporting profile, consider the following:
    +
    +- The `HiveORC` profile supports complex types. You can access Hive tables composed of
array, map, struct, and union data types. PXF serializes each of these complex types to `text`.
 
    +
    +    The `HiveVectorizedORC` profile does not support complex types.
    +
    +- The `HiveVectorizedORC` profile reads 1024 rows of data, while the `HiveORC` profile
reads only a single row at a time.
    --- End diff --
    
    profile reads 1024 rows of data at once


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