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https://issues.apache.org/jira/browse/HBASE-695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell resolved HBASE-695.
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Resolution: Not a Problem
> Add passing of filter state across regions
> ------------------------------------------
>
> Key: HBASE-695
> URL: https://issues.apache.org/jira/browse/HBASE-695
> Project: HBase
> Issue Type: New Feature
> Reporter: stack
>
> Discussion on list arrived at need for filters to carry cross-region state.
> For example, if you are looking for sufficient rows to fill the fifth page of
> a set of results and a particular region only has the first half of page 5,
> there needs to be a mechanism to tell the next region in line, how far the
> scan has gotten. Clint Morgan suggested some kind of RPC or callback that
> the serverside region could tug on to pass back to the client the state-laden
> filter for passing the next region.
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