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courses:mapreduce-tutorial:step-7 [2012/01/25 00:48] straka |
courses:mapreduce-tutorial:step-7 [2012/01/26 23:11] straka |
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====== MapReduce Tutorial : Dynamic Hadoop cluster for several computations ====== | ====== MapReduce Tutorial : Dynamic Hadoop cluster for several computations ====== | ||
- | When multiple | + | When multiple |
A cluster can be created using | A cluster can be created using | ||
- | /home/straka/ | + | /net/projects/ |
The syntax is the same as in '' | The syntax is the same as in '' | ||
Line 10: | Line 10: | ||
===== Using a running cluster ===== | ===== Using a running cluster ===== | ||
- | Running cluster is identified by its master. When running a Perl MR job, existing cluster can be used by | + | Running cluster is identified by its master. When running a Hadoop |
- | perl script.pl run -jt hostname_of_cluster_master:9001 ... | + | perl script.pl run -jt cluster_master:9001 ... |
+ | |||
+ | ===== Example ===== | ||
+ | |||
+ | Try running the same script {{: | ||
+ | / | ||
+ | perl wordcount.pl run -jt cluster_master: | ||