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Editorial Team
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Asked: 2026-06-06T01:27:23+00:00

I am trying to process xml files using Hadoop’s StreamInputFormat. And I am using

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I am trying to process xml files using Hadoop’s StreamInputFormat. And I am using the newer API(Hadoop-0.20.205.0) for this.But, it seems Job doesn’t support StreamInputFormat, as when I am trying to set the property through “job.setInputFormatClass(StreamInputFormat.class)”, it is showing – 

"The method setInputFormatClass(Class<? extends InputFormat>) in the type Job is not pplicable for the arguments (Class<StreamInputFormat>)"

I have even downloaded “hadoop-streaming-0.20.205.0.jar” explicitly and imported the “org.apache.hadoop.streaming” package, still no luck.Any suggestions??

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1 Answer

  1. Editorial Team

    You’re trying to use an old-api InputFormat (mapred) with the new API client Job (mapreduce).

    Job.setInputFormat() is expecting a class extending o.a.h.mapreduce.InputFormat (the new ‘mapreduce’ API), where as the streaming API is all written in the old API (‘mapred’ package), and StreamInputFormat extends o.a.h.mapred.KeyValueTextInputFormat, which in turn extends o.a.h.mapred.FileInputFormat (both of which are the old API):

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