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https://issues.apache.org/jira/browse/ACCUMULO-3206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Elser updated ACCUMULO-3206:
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Fix Version/s: (was: 1.7.0)
1.8.0
> New Public API: Approximate data counts of Tablets and Tablet Servers
> ---------------------------------------------------------------------
>
> Key: ACCUMULO-3206
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3206
> Project: Accumulo
> Issue Type: New Feature
> Components: client, monitor
> Affects Versions: 1.6.1
> Reporter: Dylan Hutchison
> Priority: Minor
> Fix For: 1.8.0
>
>
> The broader picture is public programmatic access to information in the
> Accumulo monitor. Specifically I'm looking to obtain the number of entries
> per tablet and per tablet server for a given table. The use case is to
> verify that manually set (or automatically set I suppose) table splits are
> effectively dividing Accumulo data among many tablets, that is, verifying
> load balancing.
> I wrote Accumulo 1.5 code which uses non-public API to obtain this
> information in the same way the Monitor does via TabletStats. The tricky part
> was cross-referencing the Metadata table to find the assignment of tablets to
> tablet servers for a given table. I rewrote that code for 1.6, switching the
> name of the Metadata table to "accumulo.metadata" and other associated
> changes, but it would be great to make this part of the public API so that
> people don't have to use non-public methods to obtain data that Accumulo has
> in the Monitor and Metadata table anyway.
> We could approach this by adding to the TableOperations class or something
> similar. A request could go to an Accumulo master which gathers the
> necessary information from the tablet servers just as the Monitor does, so
> that the client does not have to do it.
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