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courses:mapreduce-tutorial:step-12 [2012/01/25 21:29] straka |
courses:mapreduce-tutorial:step-12 [2012/01/28 23:09] majlis Added links to previous and next chapter. |
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===== Reduce-less jobs ===== | ===== Reduce-less jobs ===== | ||
If a MR job runs without reducers, the output of mappers is written to output directory without further processing. In this case, environmental variable '' | If a MR job runs without reducers, the output of mappers is written to output directory without further processing. In this case, environmental variable '' | ||
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+ | ===== Exercise ===== | ||
+ | Change the word counting script {{: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | |||
+ | ---- | ||
+ | |||
+ | < | ||
+ | <table style=" | ||
+ | <tr> | ||
+ | <td style=" | ||
+ | <td style=" | ||
+ | <td style=" | ||
+ | </tr> | ||
+ | </ | ||
+ | </ | ||