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https://issues.apache.org/jira/browse/HBASE-3857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13029739#comment-13029739
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stack commented on HBASE-3857:
------------------------------

bq.  "• entryOffsets:!the!“secondary!index” 
of!offsets!of!entries!in!the!block,!to!
facilitate!a!quick!binary!search!on!the!key!(numEntries-int!values)" Is this 
worth the bother? A binary search of in-memory data structure? How many entries 
are you thinking there will be in these blocks?

nvm on the above.  I see your comment over in HBASE-3855 on how you want to 
binary search seek/reseeking.

> Change the HFile Format
> -----------------------
>
>                 Key: HBASE-3857
>                 URL: https://issues.apache.org/jira/browse/HBASE-3857
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Liyin Tang
>            Assignee: Mikhail Bautin
>         Attachments: hfile_format_v2_design_draft_0.1.pdf
>
>
> In order to support HBASE-3763 and HBASE-3856, we need to change the format 
> of the HFile. The new format proposal is attached here. Thanks for Mikhail 
> Bautin for the documentation. 

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