hadoop.tmp.dir /app/hadoop/tmp A base for other temporary directories. fs.default.name hdfs://master:54310 The name of the default file system. A URI whose scheme and authority determine the FileSystem implementation. The uri's scheme determines the config property (fs.SCHEME.impl) naming the FileSystem implementation class. The uri's authority is used to determine the host, port, etc. for a filesystem. io.compression.codecs org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.DefaultCodec,com.hadoop.compression.lzo.LzoCodec,com.hadoop.compression.lzo.LzopCodec,org.apache.hadoop.io.compress.BZip2Codec io.compression.codec.lzo.class com.hadoop.compression.lzo.LzopCodec fs.inmemory.size.mb 200 io.sort.mb 200 io.sort.factor 50 mapred.job.shuffle.input.buffer.percent 0.5