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https://issues.apache.org/jira/browse/HBASE-9000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13819630#comment-13819630
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Lars Hofhansl commented on HBASE-9000:
--------------------------------------

Never mind that was because of caching. When I major compact (and thus wipe the 
cache) it takes 34s again. I would delete my previous comment, but that would 
confusing.

> Linear reseek in Memstore
> -------------------------
>
>                 Key: HBASE-9000
>                 URL: https://issues.apache.org/jira/browse/HBASE-9000
>             Project: HBase
>          Issue Type: Improvement
>          Components: Performance
>    Affects Versions: 0.89-fb
>            Reporter: Shane Hogan
>            Priority: Minor
>             Fix For: 0.89-fb
>
>         Attachments: hbase-9000-benchmark-program.patch, 
> hbase-9000-port-fb.patch, hbase-9000.patch
>
>
> This is to address the linear reseek in MemStoreScanner. Currently reseek 
> iterates over the kvset and the snapshot linearly by just calling next 
> repeatedly. The new solution is to do this linear seek up to a configurable 
> maximum amount of times then if the seek is not yet complete fall back to 
> logarithmic seek.



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