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courses:mapreduce-tutorial:step-24 [2012/01/27 22:20]
straka
courses:mapreduce-tutorial:step-24 [2012/01/27 23:46]
straka
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   * In one class multiple jobs can be submitted, either in sequence or in parallel.   * In one class multiple jobs can be submitted, either in sequence or in parallel.
   * A mismatch of types is usually detected by the compiler, but sometimes it is detected only at runtime. If that happens, an exception is raised and the program crashes. For example, default key output class it ''LongWritable'' -- if ''Text'' was not specified, the program would crash.   * A mismatch of types is usually detected by the compiler, but sometimes it is detected only at runtime. If that happens, an exception is raised and the program crashes. For example, default key output class it ''LongWritable'' -- if ''Text'' was not specified, the program would crash.
 +  * **VIM users**: The code completion plugin does not complete the ''context'' variable. That is because it does not understand that ''Context'' is used as an abbreviation for ''MapContext<Text, Text, Text, Text>''. If the type ''MapContext<Text, Text, Text, Text>'' is used instead of ''Context'', the code compiles and code completion on ''context'' works.
  
 ===== Running the job ===== ===== Running the job =====

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