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
WholeFileRecordReader.java
and package the java file with :
package org.apache.hadoop.streaming;
solution A:
copy WholeFileInputFormat.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 WFInputFormatClassNew
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 , 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/lib/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
