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https://issues.apache.org/jira/browse/HCATALOG-2?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julien Le Dem updated HCATALOG-2:
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Attachment: HCAT-2.patch
I'm attaching a patch (HCAT-2.patch) to support arbitrarily nested structures,
at least for structs and arrays. Maps are still string => string.
I refactored the schema validation and object conversion to recursively convert
nested structure. There is a new unit test writing from Pig to HCat and reading
back and verifying that the data is the same.
> Support nested schema conversion between Hive an Pig
> ----------------------------------------------------
>
> Key: HCATALOG-2
> URL: https://issues.apache.org/jira/browse/HCATALOG-2
> Project: HCatalog
> Issue Type: Improvement
> Affects Versions: 0.1
> Reporter: Julien Le Dem
> Assignee: Jakob Homan
> Attachments: HCAT-2.patch
>
>
> Hive supports STRUCT and ARRAY
> Pig supports Tuple and Bag
> In both cases the types can be arbitrarily nested.
> example:
> STRUCT< foo : ARRAY<STRUCT < bar1: STRING, bar2: STRING > > mystruct
> mytuple: ( foo: { t: ( bar1:chararray, bar2:chararray ) } )
> HCatalog should support nested schema conversion.
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