Hadoop增加节点比较

Ended Job = job_201312041522_1819
MapReduce Jobs Launched:
Job 0: Map: 291  Reduce: 1   Cumulative CPU: 1057.5 sec   HDFS Read: 424247672 HDFS Write: 9 SUCCESS
Total MapReduce CPU Time Spent: 17 minutes 37 seconds 500 msec
OK
17693906
Time taken: 911.854 seconds, Fetched: 1 row(s)


MapReduce Total cumulative CPU time: 19 minutes 18 seconds 490 msec
Ended Job = job_201312041522_1820
MapReduce Jobs Launched:
Job 0: Map: 291  Reduce: 1   Cumulative CPU: 1158.49 sec   HDFS Read: 424247674 HDFS Write: 9 SUCCESS
Total MapReduce CPU Time Spent: 19 minutes 18 seconds 490 msec
OK
17693906
Time taken: 517.34 seconds, Fetched: 1 row(s)