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From Yang <teddyyyy...@gmail.com>
Subject factors on the effectiveness of bloom filter?
Date Mon, 10 Oct 2011 16:31:02 GMT
I noticed that 2 of my CFs are showing very different bloom filter
false ratios, one is close to 1.0;
the other one is only 0.3

they have roughly the same sizes in SStables and counts, the
difference is key construction,
the one with 0.3 false ratio has a shorter key.

assuming the key can not be changed (or the only possibility to change
they key is simply juggle the byte order),
is there any measure to increase the effectiveness of bloom filters?

thanks
Yang

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