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Posted to issues@hive.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2016/05/23 09:50:13 UTC
[jira] [Comment Edited] (HIVE-13818) Fast Vector MapJoin not
enhanced to use sortOrder when handling BinarySortable keys for Small
Table?
[ https://issues.apache.org/jira/browse/HIVE-13818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15296167#comment-15296167 ]
Gopal V edited comment on HIVE-13818 at 5/23/16 9:50 AM:
---------------------------------------------------------
This specific case looks like it internally confuses an {{int:int}} join asa a {{long:long}} join.
Both are handled by same vector ops for joins, but need different ser/deser codepaths when reading off the SerDe into the LongColumnVector.
There's no real difference once the deserialization is complete.
My int:int join queries are throwing EOF inside Long decoding code.
was (Author: gopalv):
This specific case looks like it internally confuses an {{int:int}} join asa a {{long:long}} join.
Both are handled by same vector ops for joins, but need different ser/deser codepaths when reading off the SerDe into the LongColumnVector.
There's no real difference once the deserialization is complete.
> Fast Vector MapJoin not enhanced to use sortOrder when handling BinarySortable keys for Small Table?
> ----------------------------------------------------------------------------------------------------
>
> Key: HIVE-13818
> URL: https://issues.apache.org/jira/browse/HIVE-13818
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-13818.01.patch, HIVE-13818.02.patch
>
>
> Changes for HIVE-13682 did fix a bug in Fast Hash Tables, but evidently not this issue according to Gopal/Rajesh/Nita.
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