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Posted to issues@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2017/09/12 00:23:00 UTC
[jira] [Work started] (HIVE-17510) Make comparison of filter
predicates in q files deterministic
[ https://issues.apache.org/jira/browse/HIVE-17510?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on HIVE-17510 started by Jesus Camacho Rodriguez.
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> Make comparison of filter predicates in q files deterministic
> -------------------------------------------------------------
>
> Key: HIVE-17510
> URL: https://issues.apache.org/jira/browse/HIVE-17510
> Project: Hive
> Issue Type: Bug
> Components: Testing Infrastructure
> Affects Versions: 3.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
>
> I have been hitting this issue while submitting patches to test HIVE-17432.
> Basically, the order on which the rewriting might create the children of AND operations is not deterministic. Thus, tests might fail because the created golden file is not the same, thought the test should pass because they just simply do not follow same order:
> {code}
> predicate: ((d_year >= 1992) and (d_year <= 1997) and ((c_city = 'UNITED KI1') or (c_city = 'UNITED KI5')) and ((s_city = 'UNITED KI1') or (s_city = 'UNITED KI5'))) (type: boolean)
> {code}
> {code}
> predicate: ((d_year <= 1997) and (d_year >= 1992) and ((c_city = 'UNITED KI1') or (c_city = 'UNITED KI5')) and ((s_city = 'UNITED KI1') or (s_city = 'UNITED KI5'))) (type: boolean)
> {code}
> This patches fixes the issue by sorting the children of some expressions (currently AND and OR children) when we run explain plan and we are running in test mode.
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