move NDFS and MapReduce to a separate project
---------------------------------------------

         Key: NUTCH-193
         URL: http://issues.apache.org/jira/browse/NUTCH-193
     Project: Nutch
        Type: Task
  Components: ndfs  
    Versions: 0.8-dev    
    Reporter: Doug Cutting
 Assigned to: Doug Cutting 
     Fix For: 0.8-dev


The NDFS and MapReduce code should move from Nutch to a new Lucene sub-project 
named Hadoop.

My plan is to do this as follows:

1. Move all code in the following packages from Nutch to Hadoop:

org.apache.nutch.fs
org.apache.nutch.io
org.apache.nutch.ipc
org.apache.nutch.mapred
org.apache.nutch.ndfs

These packages will all be renamed to org.apache.hadoop, and Nutch code will be 
updated to reflect this.

2. Move selected classes from Nutch to Hadoop, as follows:

org.apache.nutch.util.NutchConf -> org.apache.hadoop.conf.Configuration
org.apache.nutch.util.NutchConfigurable -> org.apache.hadoop.Configurable 
org.apache.nutch.util.NutchConfigured -> org.apache.hadoop.Configured

org.apache.nutch.util.Progress -> org.apache.hadoop.util.Progress
org.apache.nutch.util.LogFormatter-> org.apache.hadoop.util.LogFormatter
org.apache.nutch.util.Daemon -> org.apache.hadoop.util.Daemon

3. Add a jar containing all of the above the Nutch's lib directory.

Does this plan sound reasonable?


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