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courses:mapreduce-tutorial:step-31 [2012/02/06 08:09] straka |
courses:mapreduce-tutorial:step-31 [2012/02/06 08:13] straka |
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* '' | * '' | ||
* '' | * '' | ||
+ | |||
+ | It is crucial that all the mappers run simultaneously. This can be achieved using the ''/ | ||
===== Example ===== | ===== Example ===== | ||
- | This example reads the keys of ''/ | + | This example reads the keys of ''/ |
<code java Sum.java> | <code java Sum.java> | ||
import org.apache.hadoop.mapreduce.*; | import org.apache.hadoop.mapreduce.*; | ||
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} | } | ||
</ | </ | ||
+ | |||
+ | You can run the example using: | ||
+ | wget | ||