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https://issues.apache.org/jira/browse/HIVE-4579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phabricator updated HIVE-4579:
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Attachment: HIVE-4579.D11409.1.patch
omalley requested code review of "HIVE-4579 [jira] Create a SARG interface for
RecordReaders".
Reviewers: JIRA
HIVE-4579 Create SARG interface
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.
TEST PLAN
added unit test
REVISION DETAIL
https://reviews.facebook.net/D11409
AFFECTED FILES
ql/src/java/org/apache/hadoop/hive/ql/io/sarg/PredicateLeaf.java
ql/src/java/org/apache/hadoop/hive/ql/io/sarg/SearchArgument.java
ql/src/java/org/apache/hadoop/hive/ql/io/sarg/SearchArgumentImpl.java
ql/src/test/org/apache/hadoop/hive/ql/io/sarg/TestSearchArgumentImpl.java
MANAGE HERALD RULES
https://reviews.facebook.net/herald/view/differential/
WHY DID I GET THIS EMAIL?
https://reviews.facebook.net/herald/transcript/27069/
To: JIRA, omalley
> 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
> Attachments: h-4579.patch, HIVE-4579.D11409.1.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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