Table 2 Cloud emulating Hadoop benchmarks: I/O characteristics

Grep

Mostly sequential reads with small writes

Random text writer

Mostly sequential writes, mixed with random writes and negligible reads

Sort

More reads than writes. Large sequential reads with random writes and later sequential writes

TeraSort

Good mix of sequential and random reads/writes. More reads than writes

Wordcount

Mostly sequential reads, with large number of random writes followed by random reads and small sequential writes

Word standard deviation

Mostly sequential reads with small inter-phase writes, followed by small writes in the end