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https://issues.apache.org/jira/browse/PIG-2632?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Coveney updated PIG-2632:
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Attachment: PIG-2632-1.patch
Here is an update of the patch...the big change being boolean support (it's
easy to forget that that is an official data type now!).
I also made it so that in an EvalFunc, if it is generatable, the Tuple you are
given is a SchemaTuple(!). The potential benefit for replicated joins and
whatnot is huge! Will push to reviewboard in a moment. It needs tests and
comments seriously, but I've been waiting until it settles on a general form...
> Create a SchemaTuple which generates efficient Tuples via code gen
> ------------------------------------------------------------------
>
> Key: PIG-2632
> URL: https://issues.apache.org/jira/browse/PIG-2632
> Project: Pig
> Issue Type: Improvement
> Reporter: Jonathan Coveney
> Assignee: Jonathan Coveney
> Fix For: 0.11
>
> Attachments: PIG-2632-0.patch, PIG-2632-1.patch
>
>
> This work builds on Dmitriy's PrimitiveTuple work. The idea is that, knowing
> the Schema on the frontend, we can code generate Tuples which can be used for
> fun and profit. In rudimentary tests, the memory efficiency is 2-4x better,
> and it's ~15% smaller serialized (heavily heavily depends on the data,
> though). Need to do get/set tests, but assuming that it's on par (or even
> faster) than Tuple, the memory gain is huge.
> Need to clean up the code and add tests.
> Right now, it generates a SchemaTuple for every inputSchema and outputSchema
> given to UDF's. The next step is to make a SchemaBag, where I think the
> serialization savings will be really huge.
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