FreeBSD下安装配置Hadoop集群(三)
mapred.job.tracker
hadoopmaster-177.tj:9001
mapred.local.dir
/opt/data/hadoop/mapred/mrlocal,/opt/data/hadoop1/mapred/mrlocal,/opt/data/hadoop2/mapred/mrlocal,/opt/data/hadoop3/mapred/mrlocal,/opt/data/hadoop4/mapred/mrlocal
true
mapred.system.dir
/opt/data/hadoop1/mapred/mrsystem
true
mapred.tasktracker.map.tasks.maximum
12
true
mapred.tasktracker.reduce.tasks.maximum
4
true
mapred.map.child.java.opts
-Xmx1224M
mapred.reduce.child.java.opts
-Xmx2048M
mapred.reduce.parallel.copies
10
io.sort.factor
100
mapred.job.reduce.input.buffer.percent
0.3
mapred.compress.map.output
true
mapred.map.output.compression.codec
com.hadoop.compression.lzo.LzoCodec
mapred.child.java.opts
-Djava.library.path=/opt/hadoopgpl/native/Linux-amd64-64
io.sort.mb
600
fs.inmemory.size.mb
500
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