These notes are for Pig 0.6.0 release.

Highlights
==========

- Added Zebra as a contrib project.  See http://wiki.apache.org/pig/zebra
- Added UDFContext, gives UDFs a way to pass info from front to back end and
  gives UDFS access to JobConf in the backend.  PIG-1085
- Added left outer join for fragment replicate join.  PIG-1036
- Added ability to set job priority from Pig Latin.  PIG-1025
- Enhanced multi-query to work with joins in some cases.  PIG-983
- Reworked memory manager to significantly reduce GC Overhead and Out of Heap
  failures.  PIG-975
- Added Accumulator interface for UDFs.  PIG-979
- Over 100 bug fixes and improvements.

Incompatibilities
=================
PIG-922 changed LoadFunc.fieldsToRead's signature .  Compiles LoadFuncs will
work as is, since the Pig code checks if the method conforms to the new
signature and only invokes it in the case that it does.  If users wish to
compile their LoadFunc, they will need to change this method to match the new
signature.

System Requirements
===================

1. Java 1.6.x or newer, preferably from Sun. Set JAVA_HOME to the root of your
Java installation
2. Ant build tool:  http://ant.apache.org - to build source only
3. Cygwin: http://www.cygwin.com/ - to run under Windows 
4. This release is compatible with Hadoop 0.20.x releases

Trying the Release
==================

1. Download pig-0.6.0.tar.gz
2. Unpack the file: tar -xzvf pig-0.6.0.tar.gz
3. Move into the installation directory: cd pig-0.6.0
4. To run pig without Hadoop cluster, execute the command below. This will
take you into an interactive shell called grunt that allows you to navigate
the local file system and execute Pig commands against the local files
    bin/pig -x local
5. To run on your Hadoop cluster, you need to set PIG_CLASSPATH environment
variable to point to the directory with your hadoop-site.xml file and then run
pig. The commands below will take you into an interactive shell called grunt
that allows you to navigate Hadoop DFS and execute Pig commands against it
export PIG_CLASSPATH=/hadoop/conf
    bin/pig
6. To build your own version of pig.jar run
    ant
7. To run unit tests run
    ant test 
8. To build jar file with available user defined functions run commands below.
This currently only works with Java 1.6.x.
    cd contrib/piggybank/java
    ant
9. To build the tutorial:
    cd tutorial
    ant
10. To run tutorial follow instructions in 

Relevant Documentation
======================

http://hadoop.apache.org/pig/docs/r0.6.0/
http://wiki.apache.org/pig/