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Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
courses:mapreduce-tutorial:step-3 [2012/01/26 15:28] straka |
courses:mapreduce-tutorial:step-3 [2012/01/28 11:09] majlis Odstraneny soubory s priklady |
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===== Example Perl mapper ===== | ===== Example Perl mapper ===== | ||
- | <file perl mapper.pl> | + | <file perl> |
# | # | ||
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The values '' | The values '' | ||
- | Resulting script can be executed locally | + | Resulting script can be executed locally |
perl script.pl run input_directory output_directory | perl script.pl run input_directory output_directory | ||
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. | ||
Line 40: | Line 40: | ||
===== Exercise ===== | ===== Exercise ===== | ||
- | To check that your Hadoop environment works, try running a MR job on ''/ | + | To check that your Hadoop environment works, try running a MR job on ''/ |
+ | wget --no-check-certificate ' | ||
+ | rm -rf step-3-output; | ||
- | {{.: | ||