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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4579) Create a SARG interface for RecordReaders
Date Mon, 12 Aug 2013 02:55:48 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13736517#comment-13736517
] 

Hudson commented on HIVE-4579:
------------------------------

FAILURE: Integrated in Hive-trunk-hadoop2 #353 (See [https://builds.apache.org/job/Hive-trunk-hadoop2/353/])
HIVE-4579: Create a SARG interface for RecordReaders (Owen O'Malley via Gunther Hagleitner)
(gunther: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1513029)
* /hive/trunk/ivy/libraries.properties
* /hive/trunk/ql/ivy.xml
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/sarg
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/sarg/PredicateLeaf.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/sarg/SearchArgument.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/sarg/SearchArgumentImpl.java
* /hive/trunk/ql/src/test/org/apache/hadoop/hive/ql/io/sarg
* /hive/trunk/ql/src/test/org/apache/hadoop/hive/ql/io/sarg/TestSearchArgumentImpl.java

                
> Create a SARG interface for RecordReaders
> -----------------------------------------
>
>                 Key: HIVE-4579
>                 URL: https://issues.apache.org/jira/browse/HIVE-4579
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>             Fix For: 0.12.0
>
>         Attachments: h-4579.patch, HIVE-4579.4.patch, HIVE-4579.D11409.1.patch, HIVE-4579.D11409.2.patch,
HIVE-4579.D11409.3.patch, pushdown.pdf
>
>
> I think we should create a SARG (http://en.wikipedia.org/wiki/Sargable) interface for
RecordReaders. For a first pass, I'll create an API that uses the value stored in hive.io.filter.expr.serialized.
> The desire is to define an simpler interface that the direct AST expression that is provided
by hive.io.filter.expr.serialized so that the code to evaluate expressions can be generalized
instead of put inside a particular RecordReader.

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