On 2010-05-07 10:55, Peter Schüller wrote: >> what is the benefit of creating bloom filter when cassandra writes data, how >> does it helps ? > > It allows Cassandra to answer requests for non-existent keys without > going to disk, except in cases where the bloom filter gives a false > positive. > > See: > > http://spyced.blogspot.com/2009/01/all-you-ever-wanted-to-know-about.html
It is also important for identifying which SSTable files to look inside even when a key is present. -- David Strauss | da...@fourkitchens.com Four Kitchens | http://fourkitchens.com | +1 512 454 6659 [office] | +1 512 870 8453 [direct]
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