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courses:mapreduce-tutorial:step-8 [2012/01/25 22:09] straka |
courses:mapreduce-tutorial:step-8 [2012/01/28 15:55] majlis Added links to previous and next chapter. |
On the other hand, the order of values belonging to one key is undefined. | On the other hand, the order of values belonging to one key is undefined. |
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===== Example ===== | ===== Exercise ===== |
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Run a MR job on '/home/straka/wiki/cs-text-medium', which creates an ascending list of unique article names and at the same time an ascending list of unique words. | Run a MR job on '/home/straka/wiki/cs-text-medium', which creates an ascending list of unique article names and at the same time an ascending list of unique words. You can download the template {{:courses:mapreduce-tutorial:step-8-exercise.txt|step-8-exercise.pl}} and execute it. |
| wget --no-check-certificate 'https://wiki.ufal.ms.mff.cuni.cz/_media/courses:mapreduce-tutorial:step-8-exercise.txt' -O 'step-8-exercise.pl' |
| rm -rf step-8-out-ex; perl step-8-exercise.pl run /home/straka/wiki/cs-text-medium/ step-8-out-ex |
| less step-8-out-ex/part-* |
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{{:courses:mapreduce-tutorial:step-8-solution.txt|Solution.pl}} | ==== Solution ==== |
| You can also download the solution {{:courses:mapreduce-tutorial:step-8-solution.txt|step-8-solution.pl}} and check the correct output. |
| wget --no-check-certificate 'https://wiki.ufal.ms.mff.cuni.cz/_media/courses:mapreduce-tutorial:step-8-solution.txt' -O 'step-8-solution.pl' |
| rm -rf step-8-out-sol; perl step-8-solution.pl run /home/straka/wiki/cs-text-medium/ step-8-out-sol |
| less step-8-out-sol/part-* |
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| ---- |
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| <html> |
| <table style="width:100%"> |
| <tr> |
| <td style="text-align:left; width: 33%; "></html>[[step-7|Step 7]]: Dynamic Hadoop cluster for several computations.<html></td> |
| <td style="text-align:center; width: 33%; "></html>[[.|Overview]]<html></td> |
| <td style="text-align:right; width: 33%; "></html>[[step-9|Step 9]]: Hadoop properties.<html></td> |
| </tr> |
| </table> |
| </html> |