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https://issues.apache.org/jira/browse/HBASE-8063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13598599#comment-13598599
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chunhui shen commented on HBASE-8063:
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bq.could not work on non-get scan + bloomtype != rowcol
you are right, so we can filter the hfile if its first key >= scan's stop key
or its lastkey <= scan's start key
> Filter HFiles based on first/last key
> -------------------------------------
>
> Key: HBASE-8063
> URL: https://issues.apache.org/jira/browse/HBASE-8063
> Project: HBase
> Issue Type: Improvement
> Components: Scanners
> Affects Versions: 0.98.0
> Reporter: Liang Xie
> Assignee: Liang Xie
>
> # hbase-5010 introduced a filter mechanism based on timerange hint
> # this jira is a placeholder just for keyrange hint: currently, low
> layer(hfile reader) has first/last key getter methods already. we should
> utilize this information to pre-filte hfiles while choosing scanners from
> storefiles.
> It's just a raw thought right now, no patch available yet. I'll summit a
> patch asap if it's reasonable, welcome to give some suggestions/comments:)
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