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https://issues.apache.org/jira/browse/HBASE-4223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087091#comment-13087091
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Andrew Purtell commented on HBASE-4223:
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Another option could be to spill the result into a temporary file in the region
and then allow clients to scan over them using the normal scanner interface,
setting some attribute on the Scan object to indicate what you want? There
wouldn't be a result set size limitation in this case.
> Support the ability to return a set of rows using Coprocessors
> --------------------------------------------------------------
>
> Key: HBASE-4223
> URL: https://issues.apache.org/jira/browse/HBASE-4223
> Project: HBase
> Issue Type: Improvement
> Components: coprocessors
> Affects Versions: 0.92.0
> Reporter: Nichole Treadway
> Priority: Minor
> Attachments: HBASE-4223.patch
>
>
> Currently HBase supports returning the results of aggregation operations
> using coprocessors with the AggregationClient. It would be useful to include
> a client and implementation which would return a set of rows which match a
> certain criteria using coprocessors as well. We have a use case in our
> business process for this.
> We have an initial implementation of this, which I've attached. The only
> limitation that we've found is that it cannot be used to return very large
> sets of rows. If the result set is very large, it would probably require some
> sort of pagination.
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