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Posted to dev@pig.apache.org by "Russell Jurney (JIRA)" <ji...@apache.org> on 2012/08/23 08:05:42 UTC

[jira] [Created] (PIG-2889) HBaseAvroStorage UDF

Russell Jurney created PIG-2889:
-----------------------------------

             Summary: HBaseAvroStorage UDF
                 Key: PIG-2889
                 URL: https://issues.apache.org/jira/browse/PIG-2889
             Project: Pig
          Issue Type: New Feature
          Components: data, piggybank
    Affects Versions: 0.11
            Reporter: Russell Jurney
            Assignee: Russell Jurney
             Fix For: 0.11


I want to use HBaseStorage without specifying the schema. Storing data in Avro format in HBase is a very common practice. I would like to create a UDF, HBaseAvroStorage that works just like the internal HBaseStorage UDF, but loads the Avro schema metadata so that specifying a schema is unnecessary.

I haven't thought through all the particulars, so if you have - please chime in :)

I am also not sure if this isn't sort of handled some place in HCatalog?


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[jira] [Updated] (PIG-2889) HBaseAvroStorage UDF

Posted by "Julien Le Dem (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/PIG-2889?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julien Le Dem updated PIG-2889:
-------------------------------

    Fix Version/s:     (was: 0.11)

This will go in a future release
                
> HBaseAvroStorage UDF
> --------------------
>
>                 Key: PIG-2889
>                 URL: https://issues.apache.org/jira/browse/PIG-2889
>             Project: Pig
>          Issue Type: New Feature
>          Components: data, piggybank
>    Affects Versions: 0.11
>            Reporter: Russell Jurney
>            Assignee: Russell Jurney
>
> I want to use HBaseStorage without specifying the schema. Storing data in Avro format in HBase is a very common practice. I would like to create a UDF, HBaseAvroStorage that works just like the internal HBaseStorage UDF, but loads the Avro schema metadata so that specifying a schema is unnecessary.
> I haven't thought through all the particulars, so if you have - please chime in :)
> I am also not sure if this isn't sort of handled some place in HCatalog?

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[jira] [Commented] (PIG-2889) HBaseAvroStorage UDF

Posted by "Alan Gates (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/PIG-2889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440406#comment-13440406 ] 

Alan Gates commented on PIG-2889:
---------------------------------

Hive has an AvroSerDe which I believe can read schema on the fly like this.  This should just work with HCat.  In theory this should work with HBase as well, since SerDes are independent of IF/OF and storage handlers in Hive/HCat.  This would all need to be tested.

All that said, there's nothing to prevent you from doing it as you propose in Pig without HCat.
                
> HBaseAvroStorage UDF
> --------------------
>
>                 Key: PIG-2889
>                 URL: https://issues.apache.org/jira/browse/PIG-2889
>             Project: Pig
>          Issue Type: New Feature
>          Components: data, piggybank
>    Affects Versions: 0.11
>            Reporter: Russell Jurney
>            Assignee: Russell Jurney
>             Fix For: 0.11
>
>
> I want to use HBaseStorage without specifying the schema. Storing data in Avro format in HBase is a very common practice. I would like to create a UDF, HBaseAvroStorage that works just like the internal HBaseStorage UDF, but loads the Avro schema metadata so that specifying a schema is unnecessary.
> I haven't thought through all the particulars, so if you have - please chime in :)
> I am also not sure if this isn't sort of handled some place in HCatalog?

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