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https://issues.apache.org/jira/browse/HBASE-9440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13767366#comment-13767366
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Lars Hofhansl commented on HBASE-9440:
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I will also test with smaller KVs (maybe 10 bytes values)
> Pass blocks of KVs from HFile scanner to the StoreFileScanner and up
> --------------------------------------------------------------------
>
> Key: HBASE-9440
> URL: https://issues.apache.org/jira/browse/HBASE-9440
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
>
> Currently we read KVs from an HFileScanner one-by-one and pass them up the
> scanner/heap tree. Many time the ranges of KVs retrieved from
> StoreFileScanner (by StoreScanners) and HFileScanner (by StoreFileScanner)
> will be non-overlapping. If chunks of KVs do not overlap we can sort entire
> chunks just by comparing the start/end key of the chunk. Only if chunks are
> overlapping do we need to sort KV by KV as we do now.
> I have no patch, but I wanted to float this idea.
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