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MapReduce, mail # user - Re: WholeFileInputFormat with streaming


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Re: WholeFileInputFormat with streaming
Fatih Haltas 2013-03-03, 04:14
Hi Ring,
Can you write output of "jar tf filename" command to see package
organization of jar, you created?

2 Mart 2013 Cumartesi tarihinde springring adlı kullanıcı şöyle yazdı:

> Hi,
>
>     I want to use:
> hadoop jar <my dir>/hadoop-streaming-0.20.2-cdh3u3.jar -inputformat
> org.apache.hadoop.streaming.WholeFileInputFormat
>
>     so, I download code from :
> https://github.com/tomwhite/hadoop-book/tree/master/ch07/src/main/java
> WholeFileInputFormat.java<https://github.com/tomwhite/hadoop-book/blob/master/ch07/src/main/java/WholeFileInputFormat.java>
> WholeFil! eRecordRe ader.java<https://github.com/tomwhite/hadoop-book/blob/master/ch07/src/main/java/WholeFileRecordReader.java>
>
>     and package the java file with :
> package org.apache.hadoop.streaming;
>
> solution A:
> copy WholeFileInputFormat.java<https://github.com/tomwhite/hadoop-book/blob/master/ch07/src/main/java/WholeFileInputFormat.java>,
> WholeFileRecordReader.java<https://github.com/tomwhite/hadoop-book/blob/master/ch07/src/main/java/WholeFileRecordReader.java>
> to
> hadoop-0.20.2-cdh3u3/src/contrib/streaming/src/java/org/apache/hadoop/streaming/
> then
> javac -classpath
> /usr/lib/hadoop-0.20/hadoop-0.20.2-cdh3u3-core.jar:/usr/lib/hadoop-0.20:/usr/lib/hadoop-0.20/lib/*
> -d ! WFInputFo rmatClassNew
> hadoop-0.20.2-cdh3u3/src/contrib/streaming/src/java/org/apache/hadoop/streaming/*.java
>
> there is a lot of error
>
> solution B:
> compile the java file   WholeFileInputFormat.java<https://github.com/tomwhite/hadoop-book/blob/master/ch07/src/main/java/WholeFileInputFormat.java>,
> WholeFileRecordReader.java<https://github.com/tomwhite/hadoop-book/blob/master/ch07/src/main/java/WholeFileRecordReader.java>
> :
> javac -classpath
> /usr/lib/hadoop-0.20/hadoop-0.20.2-cdh3u3-core.jar:/usr/lib/hadoop-0.20/*:/usr/lib/hadoop-0.20/lib/*
> -d WFInputFormatClass <two java file>
> copy /usr/l! ib/hadoop
> /contrib/streaming/hadoop-streaming-0.20.2-cdh3u3.jar   to <my dir>
> then :
> jar uf hadoop-streaming-0.20.2-cdh3u3.jar
> WFInputFormatClass/org/apache/hadoop/streaming/WholeFileRecordReader.class
> jar uf hadoop-streaming-0.20.2-cdh3u3.jar
> WFInputFormatClass/org/apache/hadoop/streaming/WholeFileInputFormat.class
> there is no error, but when I run:
> hadoop jar <my dir>/hadoop-streaming-0.20.2-cdh3u3.jar -inputformat
> org.apache.hadoop.streaming.WholeFileInputFormat .......
> there is error:
> -inputformat : class not found :
> org.apache.hadoop.streaming.WholeFileInputFormat
>
> what's wrong with the two solution? or is there any new solution?
>
> thx.
>
> Ring
>
>
>