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From "Joseph Adler (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-3015) Rewrite of AvroStorage
Date Tue, 29 Jan 2013 01:02:23 GMT

    [ https://issues.apache.org/jira/browse/PIG-3015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13564926#comment-13564926
] 

Joseph Adler commented on PIG-3015:
-----------------------------------

Sorry, didn't mean to submit a patch with Avro 1.7.4-SNAPSHOT. I added a couple optimizations
to Trevni so that the performance was comparable with Avro. (I'll submit that patch to Avro.)
                
> Rewrite of AvroStorage
> ----------------------
>
>                 Key: PIG-3015
>                 URL: https://issues.apache.org/jira/browse/PIG-3015
>             Project: Pig
>          Issue Type: Improvement
>          Components: piggybank
>            Reporter: Joseph Adler
>            Assignee: Joseph Adler
>         Attachments: bad.avro, good.avro, PIG-3015-2.patch, PIG-3015-3.patch, PIG-3015-4.patch,
PIG-3015-5.patch, PIG-3015-6.patch, PIG-3015-7.patch, TestInput.java, Test.java
>
>
> The current AvroStorage implementation has a lot of issues: it requires old versions
of Avro, it copies data much more than needed, and it's verbose and complicated. (One pet
peeve of mine is that old versions of Avro don't support Snappy compression.)
> I rewrote AvroStorage from scratch to fix these issues. In early tests, the new implementation
is significantly faster, and the code is a lot simpler. Rewriting AvroStorage also enabled
me to implement support for Trevni (as TrevniStorage).
> I'm opening this ticket to facilitate discussion while I figure out the best way to contribute
the changes back to Apache.

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