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Both sides previous revision Previous revision 2012/01/31 15:12 majlis Fixed code for sorting execution.2012/01/31 13:04 straka 2012/01/31 12:47 straka 2012/01/31 12:45 straka 2012/01/31 12:20 straka 2012/01/31 12:19 straka 2012/01/31 10:01 straka 2012/01/31 09:53 straka Change Java commandline syntax.2012/01/30 16:25 majlis Fixed mistake in code 2.2012/01/30 15:46 majlis 2012/01/30 15:40 majlis 2012/01/30 15:28 majlis 2012/01/30 15:23 majlis 2012/01/28 00:12 straka 2012/01/28 00:06 straka 2012/01/28 00:04 straka 2012/01/27 23:56 straka 2012/01/27 23:56 straka 2012/01/27 23:47 straka 2012/01/27 23:42 straka 2012/01/27 23:27 straka 2012/01/27 20:11 straka vytvořeno Go Next revision		Previous revision 2012/01/31 15:12 majlis Fixed code for sorting execution.2012/01/31 13:04 straka 2012/01/31 12:47 straka 2012/01/31 12:45 straka 2012/01/31 12:20 straka 2012/01/31 12:19 straka 2012/01/31 10:01 straka 2012/01/31 09:53 straka Change Java commandline syntax.2012/01/30 16:25 majlis Fixed mistake in code 2.2012/01/30 15:46 majlis 2012/01/30 15:40 majlis 2012/01/30 15:28 majlis 2012/01/30 15:23 majlis 2012/01/28 00:12 straka 2012/01/28 00:06 straka 2012/01/28 00:04 straka 2012/01/27 23:56 straka 2012/01/27 23:56 straka 2012/01/27 23:47 straka 2012/01/27 23:42 straka 2012/01/27 23:27 straka 2012/01/27 20:11 straka vytvořeno Go
courses:mapreduce-tutorial:step-25 [2012/01/31 12:47] straka		courses:mapreduce-tutorial:step-25 [2012/01/31 15:12] (current) majlis Fixed code for sorting execution.
Line 192:		Line 192:
	===== Exercise =====		===== Exercise =====
-	Implement the [[.:step-13|sorting exercise]] in Java.	+	Implement the [[.:step-13|sorting exercise]] in Java -- only the part with uniform keys.
	**Remark:** Values of type ''Text'' are sorted lexicographically, but values of type ''IntWritable'' are sorted according to value. Your mapper should therefore produce pairs of types (''IntWritable'', ''Text'').		**Remark:** Values of type ''Text'' are sorted lexicographically, but values of type ''IntWritable'' are sorted according to value. Your mapper should therefore produce pairs of types (''IntWritable'', ''Text'').
		+
		+	You can download the {{:courses:mapreduce-tutorial:step-25.txt|Sorting.java}} template and execute it.
		+
		+	wget --no-check-certificate 'https://wiki.ufal.ms.mff.cuni.cz/_media/courses:mapreduce-tutorial:step-25.txt' -O 'SortingUniform.java'
		+	# NOW VIEW THE FILE
		+	# $EDITOR SortingUniform.java
		+	make -f /net/projects/hadoop/java/Makefile SortingUniform.jar
		+	rm -rf step-25-out-uniform; /net/projects/hadoop/bin/hadoop SortingUniform.jar -c 2 -r 2 /net/projects/hadoop/examples/inputs/numbers-small step-25-out-uniform
		+	less step-25-out-uniform/part-*
		+
		+	wget --no-check-certificate 'https://wiki.ufal.ms.mff.cuni.cz/_media/courses:mapreduce-tutorial:step-25.txt' -O 'SortingNonuniform.java'
		+	# NOW VIEW THE FILE
		+	# $EDITOR SortingUniform.java
		+	make -f /net/projects/hadoop/java/Makefile SortingNonuniform.jar
		+	rm -rf step-25-out-nonuniform; /net/projects/hadoop/bin/hadoop SortingNonuniform.jar -c 2 -r 2 /net/projects/hadoop/examples/inputs/nonuniform-small  step-25-out-nonuniform
		+	less step-25-out-nonuniform/part-*
	----		----

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