Michael Wall commented on ACCUMULO-4500:

I am in favor of this idea in general.  I have concerns about performance 
though.  Beside protecting this information with some permission, can we also 
it configurable to turn off and on?  If you have it off for some period, then 
turn it on, only new ingest and files that get compacted would have the info.  
If you turn have it on, then turn it off, new data would not have it and 
compactions would not write it back out.

> Implement visibility histograms as a table feature
> --------------------------------------------------
>                 Key: ACCUMULO-4500
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4500
>             Project: Accumulo
>          Issue Type: New Feature
>          Components: client, tserver
>            Reporter: Josh Elser
> Add support to quickly extract a histogram of all of the visibilities stored 
> in an Accumulo table.
> https://lists.apache.org/thread.html/df5e764362a95277344fd2731a432e9fafc60595e7d30015d9a56b9c@%3Cdev.accumulo.apache.org%3E

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