Joe McDonnell has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/9134 )

Change subject: IMPALA-5717: Support for reading ORC data files
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Patch Set 5:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/9134/5/testdata/bin/load_nested.py
File testdata/bin/load_nested.py:

http://gerrit.cloudera.org:8080/#/c/9134/5/testdata/bin/load_nested.py@297
PS5, Line 297: def load_orc():
> I don't think this is the best way to load the data - I think we should add
We have several tables in the functional-query dataset that use complex types. 
I think it would make sense to extend those to do ORC.

For example, complextypes_fileformat is used for positive/negative testing of 
nested types for each file format. complextypes_multifileformat does something 
similar at a partition level. I think it would make sense for both of these to 
incorporate ORC. (See 
testdata/dataset/functional/functional_schema_template.sql)

complextypes_fileformat is used in our frontend planner tests that exercise the 
planner without the rest of execution. See 
fe/src/test/java/org/apache/impala/planner/PlannerTest.java. The specific test 
that uses complextypes_fileformat is testComplexTypesFileFormat(), which 
references 
testdata/workloads/functional-planner/queries/PlannerTest/complex-types-file-formats.test.
 This test is doing a similar check to what you are doing in 
nested-types-orc-basic.test, so I think it would make sense to incorporate that 
test into testComplexTypesFileFormat().



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ia7b6ae4ce3b9ee8125b21993702faa87537790a4
Gerrit-Change-Number: 9134
Gerrit-PatchSet: 5
Gerrit-Owner: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Dan Hecht <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Quanlong Huang <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-Comment-Date: Thu, 15 Mar 2018 17:03:48 +0000
Gerrit-HasComments: Yes

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