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Hadoop, mail # user - Partition classes, how to pass in background information


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Partition classes, how to pass in background information
Jane Wayne 2012-03-14, 06:31
i am using the new org.apache.hadoop.mapreduce.Partitioner class. however,
i need to pass it some background information. how can i do this?

in the old, org.apache.hadoop.mapred.Partitioner class (now deprecated),
this class extends JobConfigurable, and it seems the "hook" to pass in any
background data is with the JobConfigurable.configure(JobConf job) method.

i thought that if i sub-classed org.apache.hadoop.mapreduce.Partitioner, i
could pass in the background information, however, in the
org.apache.hadoop.mapreduce.Job class, it only has a
setPartitionerClass(Class<? extends Partitioner>) method.

all my development has been the new mapreduce package, and i would
definitely desire to stick with the new API/package. any help is
appreciated.