If you have a whole cluster of machines that have data on them and you need to ask: "does this machine probably have or not have this data?"; a bloom filter wil

If you have a whole cluster of machines that have data on them and you need to ask: "does this machine probably have or not have this data?"; a bloom filter will tell you an answer. It can save a ton of time since a bloom filter's answer is "probably yes" and "definitely no."