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courses:mapreduce-tutorial:step-3 [2012/01/28 12:03] majlis |
courses:mapreduce-tutorial:step-3 [2012/01/30 00:37] straka Improving package names of Perl programs. |
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Line 8: | Line 8: | ||
<file perl> | <file perl> | ||
- | # | + | package |
- | + | ||
- | package Mapper; | + | |
use Moose; | use Moose; | ||
with ' | with ' | ||
Line 20: | Line 18: | ||
} | } | ||
- | package | + | package |
use Hadoop:: | use Hadoop:: | ||
my $runner = Hadoop:: | my $runner = Hadoop:: | ||
- | mapper => Mapper-> | + | mapper => My::Mapper-> |
input_format => ' | input_format => ' | ||
output_format => ' | output_format => ' | ||
output_compression => 0); | output_compression => 0); | ||
- | $runner-> | + | $runner-> |
</ | </ | ||
Line 38: | Line 36: | ||
All files in input_directory are processes. The output_directory must not exist. | All files in input_directory are processes. The output_directory must not exist. | ||
+ | |||
+ | ===== Exercise ===== | ||
+ | |||
+ | To check that your Hadoop environment works, try running a MR job on ''/ | ||
+ | wget --no-check-certificate ' | ||
+ | # NOW EDIT THE FILE | ||
+ | # $EDITOR step-3-exercise.pl | ||
+ | rm -rf step-3-out-ex; | ||
+ | less step-3-out-ex/ | ||
+ | | ||
+ | ==== Solution ==== | ||
+ | You can also download the solution {{: | ||
+ | wget --no-check-certificate ' | ||
+ | # NOW VIEW THE FILE | ||
+ | # $EDITOR step-3-solution.pl | ||
+ | rm -rf step-3-out-sol; | ||
+ | less step-3-out-sol/ | ||
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