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Re: question about processing XML file - Hadoop - [mail # user]
...Look at the classes org.apache.hadoop.mapreduce.lib.input.LineRecordReader and org.apache.hadoop.mapreduce.lib.input.TextInputFormat  What you need to do  is copy those and change ...
   Author: Steve Lewis, 2010-10-12, 17:10
[expand - 1 more] - Re: I am looking for a minimal Map-Reduce task - Hadoop - [mail # user]
...Answering my own question - the following code will send  a key of 1 and a value of "foo" to a mapper and pass it on to a reducer - just the one key It is a good example of a custom inp...
   Author: Steve Lewis, 2010-10-10, 22:36
Re: return a parameter using Map only - Hadoop - [mail # user]
...what distinguishes this record and will every mapper know it? It sounds like all you need to do is ignore non-matching records and  then run other code in the mapper - I am assuming acr...
   Author: Steve Lewis, 2010-09-22, 21:32
Re: How to enumerate files in the directories? - Hadoop - [mail # user]
...   @Override     public HDFSFile[] getFiles(String directory) {         String result = executeCommand("hadoop fs -ls " + directory);     &n...
   Author: Steve Lewis, 2010-08-25, 16:04
[expand - 1 more] - Re: large parameter file, too many intermediate output - Hadoop - [mail # user]
...I don't think of half a  billion key value pairs as that large a number - nor 20,000 per task - these are not atypical for hadoop tasks and many users will see these as small numbers wh...
   Author: Steve Lewis, 2010-08-12, 21:47
Problems accessing the local file system on AWS MapReduce - Hadoop - [mail # user]
...I am trying to use Distributes Cache on AWS Elastic Map educe  Using S3Fox I see I have two files in my bucket lordjoe FeeFie.txt and Hello   In My main I say public static void ma...
   Author: Steve Lewis, 2010-08-03, 15:44
Re: Distance Calculation problem - Hadoop - [mail # user]
...Well my first suggestion is since the original String is used as a key - repeat the parse steps in the Mapper in the reduce code using the text from the key - then verify that the values you...
   Author: Steve Lewis, 2010-07-28, 18:53
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