mindong 发表于 2018-11-1 10:31:18

Hadoop 安装 教程

  mapred.job.tracker
  myna6:54321
  The host and port that the MapReduce job tracker runs
  at.    If "local", then jobs are run in-process as a single map
  and reduce task.
  
  
  
  mapred.compress.map.output
  true
  Should the outputs of the maps be compressed before being
  sent across the network. Uses SequenceFile compression.
  
  
  
  mapred.child.java.opts
  -Xmx1024m
  
  
  mapred.tasktracker.map.tasks.maximum
  4
  
  
  mapred.tasktracker.reduce.tasks.maximum
  2
  

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