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Posted to dev@pig.apache.org by "Raghu Angadi (JIRA)" <ji...@apache.org> on 2009/07/29 02:29:15 UTC
[jira] Updated: (PIG-833) Storage access layer
[ https://issues.apache.org/jira/browse/PIG-833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Raghu Angadi updated PIG-833:
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Attachment: hadoop20.jar.bz2
Attaching hadoop20.jar that needs to be placed under lib/ directory under the top level PIG directory. will included specific instructions later in the jira.
> 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
>
>
> 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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