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From "Pradeep Kamath (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-1090) Update sources to reflect recent changes in load-store interfaces
Date Tue, 22 Dec 2009 18:44:29 GMT

     [ https://issues.apache.org/jira/browse/PIG-1090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pradeep Kamath updated PIG-1090:
--------------------------------

    Attachment: PIG-1090-4.patch

Attached patch for changes to enable LoadMetadata interface. A main piece of code which has
been introduced in this patch is the PartitionFitlerOptimizer. Load statements in pig which
work with metadata wherein the data has partition columns can be followed by a filter statement
which can have conditions on the partition columns. The filter can also have conditions on
non partition columns. The PartitionFitlerOptimizer looks for conditions on partition columns
in the filter following the load and extracts them out and passes it to the LoadMetadata implementation
in the loader. Other changes in the code are to enable interacting with the LoadMetadata implementation
in the loader.

> Update sources to reflect recent changes in load-store interfaces
> -----------------------------------------------------------------
>
>                 Key: PIG-1090
>                 URL: https://issues.apache.org/jira/browse/PIG-1090
>             Project: Pig
>          Issue Type: Sub-task
>            Reporter: Pradeep Kamath
>            Assignee: Pradeep Kamath
>         Attachments: PIG-1090-2.patch, PIG-1090-3.patch, PIG-1090-4.patch, PIG-1090.patch
>
>
> There have been some changes (as recorded in the Changes Section, Nov 2 2009 sub section
of http://wiki.apache.org/pig/LoadStoreRedesignProposal) in the load/store interfaces - this
jira is to track the task of making those changes under src. Changes under test will be addresses
in a different jira.

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