Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10950 )

Change subject: IMPALA-376: add built-in functions for parsing JSON
......................................................................


Patch Set 13:

I didn't do anything that sophisticated - just wrote a python test that flipped 
bytes in HDFS files: 
https://github.com/apache/impala/blob/master/tests/query_test/test_scanners_fuzz.py#L35

Taras did some randomised testing of our decimal implementation here: 
https://github.com/apache/impala/blob/master/tests/query_test/test_decimal_fuzz.py

We can also add things to the random query generator which validates them 
against postgres but I don't think there's a close enough postgres function to 
validate against: 
https://github.com/apache/impala/blob/master/tests/comparison/funcs.py#L574


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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I6a9d3598cb3beca0865a7edb094f3a5b602dbd2f
Gerrit-Change-Number: 10950
Gerrit-PatchSet: 13
Gerrit-Owner: Quanlong Huang <huangquanl...@gmail.com>
Gerrit-Reviewer: Attila Jeges <atti...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Quanlong Huang <huangquanl...@gmail.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Zoltan Borok-Nagy <borokna...@cloudera.com>
Gerrit-Comment-Date: Tue, 28 Aug 2018 04:29:28 +0000
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