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Type mismatch error
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Hi All,I am a beginner of Hadoop. I modified the Inverted Index Code in Yahoo'sTutorial (…Continue

Tags: LongWritable, missmatch, type

Started this discussion. Last reply by Zhiqiang Ma Feb 8, 2010.

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Zhiqiang Ma replied to Zhiqiang Ma's discussion 'Type mismatch error'

I figured out the problem already. Thanks

Feb 8, 2010

Jason Venner replied to Zhiqiang Ma's discussion 'Type mismatch error'

Unless you explicitly set it, you will get TextInputFormat for your inputformat, the keys are LongWritable. If you want a text key text writable, job.setInputFormat(KeyValueTextInputFormat.class) in your main. or change the key that your mapper…

Feb 7, 2010

Type mismatch error

Hi All,I am a beginner of Hadoop. I modified the Inverted Index Code in Yahoo'sTutorial (http://developer.yahoo.com/hadoop/tutorial/module4.html#solution), butI always get errors of "java.io.IOException: Type mismatch in key frommap: expected org.apache.hadoop.io.Text, recievedorg.apache.hadoop.io.LongWritable". Could some people tell me what iswrong in my code? Thanks a…See More

Discussion posted by Zhiqiang Ma Feb 4, 2010

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Zhiqiang Ma is now a member of Hadoop Professionals Feb 4, 2010

Welcome Them!