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https://issues.apache.org/jira/browse/PIG-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12986204#action_12986204
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Scott Carey commented on PIG-1748:
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@Jacob
{quote} I can't say I'm convinced, and am in fact more concerned from your
example, given that this approach essentially builds dependencies on all of
those projects into Avro.{quote}
Avro is completely modularized now, so there would not be any dependency mess
like that. It is now easy to add separate modules such as 'avro-pig.jar' or
'avro-hive.jar'. It already has 'avro-mapred.jar'.
https://cwiki.apache.org/confluence/display/AVRO/Build+Documentation#BuildDocumentation-Java
As this gets off topic, we can use Avro developer mailing list. Related issues
are https://issues.apache.org/jira/browse/AVRO-647 and the issues linked to it,
as well as https://issues.apache.org/jira/browse/AVRO-592. There is no ticket
yet on the broader scope stuff.
> Add load/store function AvroStorage for avro data
> -------------------------------------------------
>
> Key: PIG-1748
> URL: https://issues.apache.org/jira/browse/PIG-1748
> Project: Pig
> Issue Type: Improvement
> Components: impl
> Reporter: lin guo
> Assignee: Jakob Homan
> Attachments: avro_storage.patch, avro_test_files.tar.gz,
> PIG-1748-2.patch
>
>
> We want to use Pig to process arbitrary Avro data and store results as Avro
> files. AvroStorage() extends two PigFuncs: LoadFunc and StoreFunc.
> Due to discrepancies of Avro and Pig data models, AvroStorage has:
> 1. Limited support for "record": we do not support recursively defined record
> because the number of fields in such records is data dependent.
> 2. Limited support for "union": we only accept nullable union like ["null",
> "some-type"].
> For simplicity, we also make the following assumptions:
> If the input directory is a leaf directory, then we assume Avro data files in
> it have the same schema;
> If the input directory contains sub-directories, then we assume Avro data
> files in all sub-directories have the same schema.
> AvroStorage takes no input parameters when used as a LoadFunc (except for
> "debug [debug-level]").
> Users can provide parameters to AvroStorage when used as a StoreFunc. If they
> don't, Avro schema of output data is derived from its
> Pig schema.
> Detailed documentation can be found in
> http://snaprojects.jira.com/wiki/display/HTOOLS/AvroStorage+-+Pig+support+for+Avro+data
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