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https://issues.apache.org/jira/browse/ACCUMULO-2494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Elser reopened ACCUMULO-2494:
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Just deployed a fresh copy of 1.6.0 and got a failure because commons-math was
not in the tarball. assembly/src/main/asssemblies/component.xml needs to be
updated to include this direct dependency to the tarball.
RPM and DEB should also be checked to ensure the dependency is present there.
> Stat calculation of STDEV may be inaccurate
> -------------------------------------------
>
> Key: ACCUMULO-2494
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2494
> Project: Accumulo
> Issue Type: Bug
> Components: client
> Reporter: Mike Drob
> Fix For: 1.5.2, 1.6.0
>
>
> The math is sound, but it is susceptible to rounding errors. We should
> address that.
> See http://www.strchr.com/standard_deviation_in_one_pass and
> http://www.cs.berkeley.edu/~mhoemmen/cs194/Tutorials/variance.pdf
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