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https://issues.apache.org/jira/browse/PIG-833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Raghu Angadi updated PIG-833:
-----------------------------

    Attachment: PIG-833-zebra.patch.bz2

Updated patch. Only change is that ant prints a descriptive error to user if 
hadoop20.jar does not exist in top level lib directory. It lists basic steps to 
get this built until PIG-660 is committed.


> Storage access layer
> --------------------
>
>                 Key: PIG-833
>                 URL: https://issues.apache.org/jira/browse/PIG-833
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Jay Tang
>         Attachments: hadoop20.jar.bz2, PIG-833-zebra.patch, 
> PIG-833-zebra.patch.bz2, zebra-javadoc.tgz
>
>
> A layer is needed to provide a high level data access abstraction and a 
> tabular view of data in Hadoop, and could free Pig users from implementing 
> their own data storage/retrieval code.  This layer should also include a 
> columnar storage format in order to provide fast data projection, 
> CPU/space-efficient data serialization, and a schema language to manage 
> physical storage metadata.  Eventually it could also support predicate 
> pushdown for further performance improvement.  Initially, this layer could be 
> a contrib project in Pig and become a hadoop subproject later on.

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