Google sorts 1TB in 68 seconds and 1PB in …

We are excited to announce we were able to sort 1TB (stored on the Google File System as 10 billion 100-byte records in uncompressed text files) on 1,000 computers in 68 seconds. By comparison, the previous 1TB sorting record is 209 seconds on 910 computers.
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It took six hours and two minutes to sort 1PB (10 trillion 100-byte records) on 4,000 computers. We’re not aware of any other sorting experiment at this scale and are obviously very excited to be able to process so much data so quickly.

source: Sorting 1PB with MapReduce

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