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https://issues.apache.org/jira/browse/HIVE-1940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990331#comment-12990331
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Anja Gruenheid commented on HIVE-1940:
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I have set up the last stable version, but as far as I understood, some
features have been added during the current iteration, which also have had
impact on the design of the MetaStore. Is there an up-to-date overview of the
MetaStore somewhere or should I retrace the updates that have been made since
the last release?
If I can collect all the data that I need, I'll create the model.
> Query Optimization Using Column Metadata and Histograms
> -------------------------------------------------------
>
> Key: HIVE-1940
> URL: https://issues.apache.org/jira/browse/HIVE-1940
> Project: Hive
> Issue Type: New Feature
> Components: Metastore, Query Processor
> Reporter: Anja Gruenheid
>
> The current basis for cost-based query optimization in Hive is information
> gathered on tables and partitions. To make further improvements in query
> optimization possible, the next step is to develop and implement
> possibilities to gather information on columns as discussed in issue HIVE-33.
> After that, an implementation of histograms is a possible option to use and
> collect run-time statistics. Next to the actual implementation of these
> features, it is also necessary to develop a consistent storage model for the
> MetaStore.
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