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https://issues.apache.org/jira/browse/HBASE-2038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13181077#comment-13181077
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Lars Hofhansl commented on HBASE-2038:
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I see. So if I wanted to do a Get and all I have is the value of an indexed
column, I have to ask all regions, correct? (Because there is no way to
identify the region with the column value ahead of time)
> Coprocessors: Region level indexing
> -----------------------------------
>
> Key: HBASE-2038
> URL: https://issues.apache.org/jira/browse/HBASE-2038
> Project: HBase
> Issue Type: New Feature
> Components: coprocessors
> Reporter: Andrew Purtell
> Priority: Minor
>
> HBASE-2037 is a good candidate to be done as coprocessor. It also serve as a
> good goalpost for coprocessor environment design -- there should be enough of
> it so region level indexing can be reimplemented as a coprocessor without any
> loss of functionality.
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