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Performance
Tests run on cluster of 1800 machines:
4 GB of memory
Dual-processor 2 GHz Xeons with Hyperthreading
Dual 160 GB IDE disks
Gigabit Ethernet per machine
Bisection bandwidth approximately 100 Gbps
Two benchmarks:
MR_Grep
Scan 10
10
100-byte records to extract records matching a rare pattern (92K matching records)
MR_Sort
Sort 10
10
100-byte records (modeled after TeraSort benchmark)