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https://issues.apache.org/jira/browse/HIVE-11982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14939062#comment-14939062
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Yongzhi Chen commented on HIVE-11982:
-------------------------------------
I finally figured out the mystery of the query plan difference between unit
test and local or cluster manual test:
The unit tests set hive.in.test to true through data/conf/hive-site.xml. This
flag does a lot of magic, one of them is in
static String canHandleQbForCbo(QueryProperties queryProperties, HiveConf
conf,... method.
If I change the code
boolean isInTest = conf.getBoolVar(ConfVars.HIVE_IN_TEST);
to
boolean isInTest = false;
The unit test query plan will be same as manual tests.
The problem is how to control the code in my qfile test.
I can not set hive.in.test to false in the qfile for it will throw exception on
the set statement. Should we add a new property to check in canHandleQbForCbo
method? (Something like NeedCheckHiveInTest and default to true?).
> Some test cases for union all fail with recent changes
> ------------------------------------------------------
>
> Key: HIVE-11982
> URL: https://issues.apache.org/jira/browse/HIVE-11982
> Project: Hive
> Issue Type: Bug
> Reporter: Yongzhi Chen
> Assignee: Yongzhi Chen
> Attachments: HIVE-11982.1.patch
>
>
> The tests throw java.lang.IndexOutOfBoundsException again.
> It was supposed to be fixed by HIVE-11271
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