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courses:mapreduce-tutorial:step-24 [2012/01/31 11:27] straka |
courses:mapreduce-tutorial:step-24 [2012/01/31 11:29] straka |
* ''net/projects/hadoop/bin/hadoop job.jar -c number_of_machines [-w secs_to_wait_after_job_finishes] [-r number_of_reducers] [-Dname=value -Dname=value ...] input output_path'' -- creates a new cluster with specified number of machines, which executes given job, and then waits for specified number of seconds before it stops. | * ''net/projects/hadoop/bin/hadoop job.jar -c number_of_machines [-w secs_to_wait_after_job_finishes] [-r number_of_reducers] [-Dname=value -Dname=value ...] input output_path'' -- creates a new cluster with specified number of machines, which executes given job, and then waits for specified number of seconds before it stops. |
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===== Exercise ===== | ===== Exercise 1 ===== |
Download the ''MapperOnlyHadoopJob.java'', compile it and run it using | Download the ''MapperOnlyHadoopJob.java'', compile it and run it using |
wget --no-check-certificate 'https://wiki.ufal.ms.mff.cuni.cz/_export/code/courses:mapreduce-tutorial:step-24?codeblock=1' -O 'MapperOnlyHadoopJob.java' | wget --no-check-certificate 'https://wiki.ufal.ms.mff.cuni.cz/_export/code/courses:mapreduce-tutorial:step-24?codeblock=1' -O 'MapperOnlyHadoopJob.java' |
</code> | </code> |
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| ===== Example 2 ===== |
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---- | ---- |