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https://issues.apache.org/jira/browse/ORC-673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved ORC-673.
-------------------------------
Fix Version/s: 1.7.0
Resolution: Fixed
This is resolved via
https://github.com/apache/orc/commit/7c081492c438b7b6c0ac540b10524c6f59d1b001
> PPD: LTE Point equality comparison is wrong when RG MIN==MAX
> ------------------------------------------------------------
>
> Key: ORC-673
> URL: https://issues.apache.org/jira/browse/ORC-673
> Project: ORC
> Issue Type: Bug
> Reporter: Panagiotis Garefalakis
> Assignee: Panagiotis Garefalakis
> Priority: Major
> Fix For: 1.7.0
>
>
> Currently LESS_THAN_EQUALS PPD evaluation does not properly handle the
> Equality corner case where a RG has a single repeating value and thus MIN ==
> MAX:
> As part of the range to point comparison the compare method will return MIN:
> https://github.com/apache/orc/blob/2f98b1a555850051b5081105262c1744dcc14906/java/core/src/java/org/apache/orc/impl/RecordReaderImpl.java#L359
> Since the evaluatePredicateMinMax method does explicitly account for that
> scenario, it will return YES_NO, with the row group ending up being selected
> (even though it could be avoided):
> https://github.com/apache/orc/blob/2f98b1a555850051b5081105262c1744dcc14906/java/core/src/java/org/apache/orc/impl/RecordReaderImpl.java#L658
> Steps to repro on Hive:
> {code:java}
> create table tbl2 (fld int, fld1 int) stored as ORC
> tblproperties('transactional'='true');
> insert into tbl2 values (1,1);
> insert into tbl2 values (2,2);
> insert into tbl2 values (3,3);
> select * from tbl2 where fld > 1 and fld < 3;
> {code}
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