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From "Olga Natkovich" <ol...@yahoo-inc.com>
Subject REMINDER: Merge of types branch onto the trunk
Date Mon, 12 Jan 2009 18:18:04 GMT

We have not seen any requests for delay so we are performing the merge
at 2 pm PST today. Please, don't use SVN till all clear message is sent.


> -----Original Message-----
> From: Olga Natkovich [mailto:olgan@yahoo-inc.com] 
> Sent: Thursday, January 08, 2009 1:11 PM
> To: pig-user@hadoop.apache.org; pig-dev@hadoop.apache.org
> Subject: Merge of types branch onto the trunk
> Hi,
> As many of you know, for more than nine month now we have 
> been doing most of our development work on the types branch. 
> The code on the types branch is almost a complete rewrite of 
> the system with dramatically (10x on some queries) 
> performance speedup and many new features such as 
> introduction of the type system, addition of limit, etc. This 
> code has been successfully used in Yahoo for the last several 
> month and is stable.
> It is now time for us to move the code from the types branch 
> to the trunk to make it our main code base. Here is the 
> proposal for the move:
> (1) The move will happen next Monday, 1/12, 2-3 pm. The move 
> will consist of two parts: moving current trunk (using svn mv 
> command) to a new branch called "pretypes" so that it can 
> still be available to those who need it; moving types branch 
> (using svn mv)  to the trunk so that all main development and 
> use can be done from it. We expect the move to take 
> approximately 1 hour and we would ask the users not to use 
> SVN during that time.
> (2) Once the move is complete, you can access the content of 
> the old trunk via the following command:
> svn co http://svn.apache.org/repos/asf/hadoop/pig/branches/pretypes
> (3) We strongly encourage you to move your work on to the 
> latest trunk code as it is more efficient and is the code 
> that will be supported going forward. The new code is not 
> completely backward compatible and will require changes 
> especially in the area of the UDFs. We have documentation to 
> ease the transition:
> http://wiki.apache.org/pig/TrunkToTypesChanges - document 
> that describes changes needed for transition 
> http://wiki.apache.org/pig-data/attachments/FrontPage/attachme
> nts/plrm.h
> tm - PigLating manual for the latest code 
> http://wiki.apache.org/pig/UDFManual - Manual for using and 
> writing UDFs with the latest code
> (4) If you are a owner of a UDF in the piggybank, make sure 
> that your UDFs are transitioned to the latest code. 
> Let us know if you have questions or concerns. Unless we here 
> serious objections between now and Monday, we will go ahead 
> with the plan above.
> Thanks,
> Olga

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