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From Apache Wiki <wikidi...@apache.org>
Subject [Pig Wiki] Update of "Pig070IncompatibleChanges" by OlgaN
Date Thu, 25 Feb 2010 01:38:48 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Pig Wiki" for change notification.

The "Pig070IncompatibleChanges" page has been changed by OlgaN.
http://wiki.apache.org/pig/Pig070IncompatibleChanges?action=diff&rev1=25&rev2=26

--------------------------------------------------

  
  == Summary ==
  
- || Change || Impact || Steps to address || Comments ||
+ || Change || Section || Impact || Steps to address || Comments ||
- || Load/Store interface changes || High || [[LoadStoreMigrationGuide || Load Store Migration
Guide]] || ||
+ || Load/Store interface changes || Changes to the Load and Store Functions || High || [[LoadStoreMigrationGuide
|| Load Store Migration Guide]] || ||
+ || Data compression becomes load/store function specific || Handling Compressed Data ||
Unknow but hopefully low || If compression is needed the underlying Input/Output format would
need to support it || ||
- || Bzip compressed files can no longer have .bz extension || Low || 1. Rename existing .bz
files to .bz2 files. 2. Update scripts to read/write files with bz2 extension || This change
is due to the fact that Text{Input/Output}Format only supports bz2 extension ||
+ || Bzip compressed files can no longer have .bz extension || Handling Compressed Data ||
Low || 1. Rename existing .bz files to .bz2 files. 2. Update scripts to read/write files with
bz2 extension || This change is due to the fact that Text{Input/Output}Format only supports
bz2 extension ||
+ || Switch to Hadoop's local mode || Local Mode || Low || None || Main change is 10-20x performance
slowdown. Also, local mode now uses the same UDF interfaces to execute UDFs as the MR mode.
||
  
  == Changes to the Load and Store Functions ==
  

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