Sorry about the massive code chunk, I am not used to this mail client, I 
attached the file instead.

On 8/7/08 4:18 PM, "Michael Andrews" <[EMAIL PROTECTED]> wrote:

Hi,

I am a new hadoop developer and am struggling to understand why I cannot pass 
TupleWritable between a map and reduce function.  I have modified the wordcount 
example to demonstrate the issue.  Also I am using hadoop 0.17.1.

Is properly constructing the desired tuple.  I am not sure if it is being 
outputed correctly by output.collect as I cannot find the field in the 
OutputCollector data structure.  When I check in the reduce method the values 
are always empty tuples.  I have a feeling it has something to do with this 
line in the JavaDoc:

TupleWritable(Writable[] vals)
          Initialize tuple with storage; unknown whether any of them contain 
"written" values.

Thanks in advance for any all help,

Michael



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