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https://issues.apache.org/jira/browse/HBASE-6805?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell resolved HBASE-6805.
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Resolution: Abandoned
> Extend co-processor framework to provide observers for filter operations
> ------------------------------------------------------------------------
>
> Key: HBASE-6805
> URL: https://issues.apache.org/jira/browse/HBASE-6805
> Project: HBase
> Issue Type: Sub-task
> Components: Coprocessors
> Affects Versions: 0.95.2
> Reporter: Jason Dai
> Priority: Major
> Attachments: extend_coprocessor.patch
>
>
> There are several filter operations (e.g., filterKeyValue, filterRow,
> transform, etc.) at the region server side that either exclude KVs from the
> returned results, or transform the returned KV. We need to provide observers
> (e.g., preFilterKeyValue and postFilterKeyValue) for these operations in the
> same way as the observers for other data access operations (e.g., preGet and
> postGet). This extension is needed to support DOT (e.g., extracting
> individual fields from the document in the observers before passing them to
> the related filter operations)
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