17/05/23 17:18:53 INFO mapreduce.Job: Counters: 49 #  6类（）49个计数器（亲自数了一遍）。File System CountersFILE: Number of bytes read=12222FILE: Number of bytes written=239539FILE: Number of read operations=0FILE: Number of large read operations=0FILE: Number of write operations=0HDFS: Number of bytes read=11316HDFS: Number of bytes written=1892HDFS: Number of read operations=8HDFS: Number of large read operations=0HDFS: Number of write operations=2Job Counters Launched map tasks=1Launched reduce tasks=1Other local map tasks=1Total time spent by all maps in occupied slots (ms)=21775Total time spent by all reduces in occupied slots (ms)=16960Total time spent by all map tasks (ms)=21775Total time spent by all reduce tasks (ms)=16960Total vcore-milliseconds taken by all map tasks=21775Total vcore-milliseconds taken by all reduce tasks=16960Total megabyte-milliseconds taken by all map tasks=22297600Total megabyte-milliseconds taken by all reduce tasks=17367040Map-Reduce FrameworkMap input records=108Map output records=216Map output bytes=11784Map output materialized bytes=12222Input split bytes=279Combine input records=0Combine output records=0Reduce input groups=36Reduce shuffle bytes=12222Reduce input records=216Reduce output records=36Spilled Records=432Shuffled Maps =1Failed Shuffles=0Merged Map outputs=1GC time elapsed (ms)=232CPU time spent (ms)=2180Physical memory (bytes) snapshot=273268736Virtual memory (bytes) snapshot=4118401024Total committed heap usage (bytes)=137498624Shuffle ErrorsBAD_ID=0CONNECTION=0IO_ERROR=0WRONG_LENGTH=0WRONG_MAP=0WRONG_REDUCE=0File Input Format Counters Bytes Read=0File Output Format Counters Bytes Written=1892