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https://issues.apache.org/jira/browse/PIG-2778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13841498#comment-13841498
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Rohini Palaniswamy commented on PIG-2778:
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[~daijy],
We are not using 0.12 yet. But saw that
http://svn.apache.org/viewvc/hive/trunk/hcatalog/hcatalog-pig-adapter/src/main/java/org/apache/hcatalog/pig/HCatLoader.java?view=markup
getHCatComparisonString() does not convert matches to LIKE. Wouldn't that
cause issues? Have you encountered it? According to
https://issues.apache.org/jira/browse/HIVE-1609 - LIKE is supported. So
HCatLoader will have to change to support that or if there is a matches
condition on a partition column I am suspecting there will be a exception
looking at the InitializeInput code in hcat. Will try it out next week and
confirm.
> Add 'matches' operator to predicate pushdown
> --------------------------------------------
>
> Key: PIG-2778
> URL: https://issues.apache.org/jira/browse/PIG-2778
> Project: Pig
> Issue Type: Bug
> Reporter: Dmitriy V. Ryaboy
> Assignee: Cheolsoo Park
> Fix For: 0.12.0
>
> Attachments: PIG-2778.patch, test_e2e.log, test_unit.log
>
>
> Currently the regex match operation does not get pushed down to LoadMetadata
> (and Expression does not have an enum value for it); it would be quite useful
> to enable this for some optimizations.
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