[
https://issues.apache.org/jira/browse/PIG-924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745544#action_12745544
]
Dmitriy V. Ryaboy commented on PIG-924:
---------------------------------------
Arun -- it wouldn't suffice for those who want to use pig-0.4 with hadoop 0.19*
or 0.20*
Pig 0.5 isn't due out for 4 to 6 months which is behind the curve for adoption
of 20. Putting in this patch will make compatibility an issue of a
compile-time flag. Putting in this patch and restructuring the ant tasks
somewhat will make this completely transparent.
Waiting until 0.5 means that users wind up with instructions like this:
http://behemoth.strlen.net/~alex/hadoop20-pig-howto.txt for half a year.
> Make Pig work with multiple versions of Hadoop
> ----------------------------------------------
>
> Key: PIG-924
> URL: https://issues.apache.org/jira/browse/PIG-924
> Project: Pig
> Issue Type: Bug
> Reporter: Dmitriy V. Ryaboy
> Attachments: pig_924.2.patch, pig_924.3.patch, pig_924.patch
>
>
> The current Pig build scripts package hadoop and other dependencies into the
> pig.jar file.
> This means that if users upgrade Hadoop, they also need to upgrade Pig.
> Pig has relatively few dependencies on Hadoop interfaces that changed between
> 18, 19, and 20. It is possibly to write a dynamic shim that allows Pig to
> use the correct calls for any of the above versions of Hadoop. Unfortunately,
> the building process precludes us from the ability to do this at runtime, and
> forces an unnecessary Pig rebuild even if dynamic shims are created.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
