[infinispan-issues] [JBoss JIRA] (ISPN-4683) DefaultConsistentHash segment size is not not computed correctly

[Dan Berindei (JIRA)]

Dan Berindei created ISPN-4683:
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             Summary: DefaultConsistentHash segment size is not not computed correctly
                 Key: ISPN-4683
                 URL: https://issues.jboss.org/browse/ISPN-4683
             Project: Infinispan
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Core, Remote Protocols
    Affects Versions: 7.0.0.Beta1, 6.0.2.Final
            Reporter: Dan Berindei
            Assignee: Dan Berindei
             Fix For: 7.0.0.Beta2


The segment size is computed using {{o.i.commons.util.Util.getSegmentSize()}} both on the server and in the Java client. The computation uses {{float}} division, but {{float}} precision is not good enough and sometimes the segments are too small (e.g. with 200 segments, the segment size is 10737418 instead of 10737419). This means the keys with a hash of {{Integer.MAX_VALUE}} or {{-1}} are not properly mapped to a segment.




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