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Both sides previous revision Previous revision 2012/01/31 15:55 straka 2012/01/31 09:37 straka Change Perl commandline syntax.2012/01/31 09:36 straka The number of reducers must be specified in the exercise.2012/01/30 00:38 straka Improving package names of Perl programs.2012/01/29 23:54 majlis 2012/01/29 21:12 straka 2012/01/29 21:04 straka 2012/01/29 21:01 straka 2012/01/29 20:58 straka 2012/01/28 17:40 straka 2012/01/28 15:55 majlis Added links to previous and next chapter.2012/01/28 15:53 majlis Commands for execution were added.2012/01/28 15:36 majlis 2012/01/25 22:09 straka 2012/01/25 18:37 straka 2012/01/25 15:54 straka 2012/01/25 15:54 straka 2012/01/25 15:29 straka 2012/01/25 15:17 straka 2012/01/25 15:16 straka 2012/01/25 15:00 straka 2012/01/25 14:54 straka 2012/01/25 14:47 straka 2012/01/25 14:46 straka vytvořeno Go		2012/01/31 15:55 straka 2012/01/31 09:37 straka Change Perl commandline syntax.2012/01/31 09:36 straka The number of reducers must be specified in the exercise.2012/01/30 00:38 straka Improving package names of Perl programs.2012/01/29 23:54 majlis 2012/01/29 21:12 straka 2012/01/29 21:04 straka 2012/01/29 21:01 straka 2012/01/29 20:58 straka 2012/01/28 17:40 straka 2012/01/28 15:55 majlis Added links to previous and next chapter.2012/01/28 15:53 majlis Commands for execution were added.2012/01/28 15:36 majlis 2012/01/25 22:09 straka 2012/01/25 18:37 straka 2012/01/25 15:54 straka 2012/01/25 15:54 straka 2012/01/25 15:29 straka 2012/01/25 15:17 straka 2012/01/25 15:16 straka 2012/01/25 15:00 straka 2012/01/25 14:54 straka 2012/01/25 14:47 straka 2012/01/25 14:46 straka vytvořeno Go Next revision Both sides next revision
courses:mapreduce-tutorial:step-8 [2012/01/25 15:54] straka		courses:mapreduce-tutorial:step-8 [2012/01/25 15:54] straka
Line 12:		Line 12:
	To use multiple reducers, the MR job must be executed by a cluster (even with one computer), not locally. The number of reducers is specified by ''-r'' flag:		To use multiple reducers, the MR job must be executed by a cluster (even with one computer), not locally. The number of reducers is specified by ''-r'' flag:
-	perl script.pl [-jt cluster_master | -c cluster_size [-w sec_to_wait]] [-r number_of_reducers]	+	perl script.pl run [-jt cluster_master | -c cluster_size [-w sec_to_wait]] [-r number_of_reducers]
	==== Partitioning ====		==== Partitioning ====

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