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https://issues.apache.org/jira/browse/PHOENIX-825?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gabriel Reid resolved PHOENIX-825.
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Resolution: Fixed
Jira status cleanup
> Extendible hashing implementation
> ---------------------------------
>
> Key: PHOENIX-825
> URL: https://issues.apache.org/jira/browse/PHOENIX-825
> Project: Phoenix
> Issue Type: Task
> Reporter: kutschm
>
> This pull requests implements the following changes:
> - SpillMap uses an extendible hashing technique to distribute the spilled
> elements to pages on disk and dynamically grows the hashing space. For
> details to the algorithm, please refer to the following slide deck:
> http://db.inf.uni-tuebingen.de/files/teaching/ws1011/db2/db2-hash-indexes.pdf
> - GroupByCache now fully implements the Map interface, and thus can be
> abstracted as such and created from within a factory.
> - Added a couple more aggregates to the unit test and increased the row
> insertion number.
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