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From Apache Wiki <>
Subject [Cassandra Wiki] Update of "NodeTool_JP" by GehrigKunz
Date Thu, 14 Nov 2013 23:32:08 GMT
Dear Wiki user,

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The "NodeTool_JP" page has been changed by GehrigKunz:


  Typically in a histogram the values are plotted over discrete intervals. Similarly Cassandra
defines buckets. The number of buckets is 1 more than the bucket offsets. The last element
is values greater than the last offset. The values you see in the Offset column in the output
is bucket offsets.
  The bucket offset starts at 1 and grows by 1.2 each time (rounding and removing duplicates).
It goes from 1 to around 36M by default (creating 90+1 buckets), which will give us timing
resolution from microseconds to 36 seconds, with less precision as the numbers get larger.
(see EstimatedHistogram class)
+ {{|stats}}

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