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