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https://issues.apache.org/jira/browse/HBASE-1517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pranav Khaitan resolved HBASE-1517.
-----------------------------------

    Hadoop Flags: [Reviewed]
      Resolution: Fixed

Code submitted.
Committed by Ryan. 
Thanks to Ryan, Stack and Ted for their feedback on this!

> Implement inexpensive seek operations in HFile
> ----------------------------------------------
>
>                 Key: HBASE-1517
>                 URL: https://issues.apache.org/jira/browse/HBASE-1517
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.20.0
>            Reporter: Jonathan Gray
>            Assignee: Pranav Khaitan
>             Fix For: 0.90.0
>
>         Attachments: ReseekV10.patch
>
>
> When we early-out of a row because of columns, versions, filters, etc... we 
> seek to the end of that row one key at a time.  We should do the seek at the 
> HFile level in cases where we would end up skipping blocks in the process.  
> This will be very common in cases with relatively large rows and regex row 
> filters.
> If calls that end up doing nothing are constant time, we could also call this 
> to seek to the next column (or even a specific column in ExplicitTracker 
> case).

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