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https://issues.apache.org/jira/browse/HBASE-11811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14108745#comment-14108745
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Lars Hofhansl commented on HBASE-11811:
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In order to work fine for scanning:
# avoid this unless the caller wants to seek into the block. A simple next()
into the next block should not cause a prefetch of all the locations of all
Cells
# also avoid this when the block is not cached in the first place
> Use binary search for seeking into a block
> ------------------------------------------
>
> Key: HBASE-11811
> URL: https://issues.apache.org/jira/browse/HBASE-11811
> Project: HBase
> Issue Type: Brainstorming
> Reporter: Lars Hofhansl
> Attachments: 11811-wip-v2.txt, block_index-v2.txt
>
>
> Currently upon every seek (including Gets) we need to linearly look through
> the block from the beginning until we find the Cell we are looking for.
> It should be possible to build a simple cache of offsets of Cells for each
> block as it is loaded and then use binary search to find the Cell in question.
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