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https://issues.apache.org/jira/browse/HBASE-5313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13245093#comment-13245093
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Kannan Muthukkaruppan commented on HBASE-5313:
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Yongqiang: Any updates on this effort/investigation? I noticed HBASE-5674 that 
you had created which is sort of going after a specific part (timestamps)... 
but was curious where things are with respect to this JIRA.
                
> Restructure hfiles layout for better compression
> ------------------------------------------------
>
>                 Key: HBASE-5313
>                 URL: https://issues.apache.org/jira/browse/HBASE-5313
>             Project: HBase
>          Issue Type: Improvement
>          Components: io
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>
> A HFile block contain a stream of key-values. Can we can organize these kvs 
> on the disk in a better way so that we get much greater compression ratios?
> One option (thanks Prakash) is to store all the keys in the beginning of the 
> block (let's call this the key-section) and then store all their 
> corresponding values towards the end of the block. This will allow us to 
> not-even decompress the values when we are scanning and skipping over rows in 
> the block.
> Any other ideas? 

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