mapred.job.tracker
master:54311
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.output.compress
true
mapred.output.compression.type
BLOCK
mapred.output.compression.codec
com.hadoop.compression.lzo.LzoCodec
mapred.map.output.compression.codec
com.hadoop.compression.lzo.LzoCodec
mapred.compress.map.output
true
mapred.job.reuse.jvm.num.tasks
10
mapred.tasktracker.map.tasks.maximum
4
mapred.tasktracker.reduce.tasks.maximum
2
mapred.reduce.tasks
40
mapred.map.child.java.opts
-Xmx512G
mapred.reduce.child.java.opts
-Xmx1G
mapred.reduce.parallel.copies
20