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Usage: MapReduce jobs run in August 2004

Number of jobs 29,423
Average job completion time 634  secs
Machine days used 79,186  days
Input data read 3,288  TB
Intermediate data produced 758  TB
Output data written 193  TB
Average worker machines per job 157
Average worker deaths per job 1.2
Average map tasks per job 3,351
Average reduce tasks per job 55
Unique map implementations 395
Unique reduce implementations 269
Unique map/reduce combinations 426