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https://issues.apache.org/jira/browse/HBASE-12883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell closed HBASE-12883.
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> Support block encoding based on knowing set of column qualifiers up front
> -------------------------------------------------------------------------
>
> Key: HBASE-12883
> URL: https://issues.apache.org/jira/browse/HBASE-12883
> Project: HBase
> Issue Type: Bug
> Reporter: James R. Taylor
> Priority: Major
> Labels: Phoenix
>
> Phoenix knows up front the set of column qualifiers a row will have. We could
> likely get some good compression with little CPU based on this by having a
> block encoding scheme that leverages this information. It could be made
> non-Phoenix specific by identifying the set of column qualifiers through meta
> data to the block encoder.
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