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https://issues.apache.org/jira/browse/HBASE-11729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14095609#comment-14095609
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Anoop Sam John commented on HBASE-11729:
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There is min change from V2 to V3. There is no layout change or so. Along with
every KV, the tags part will come extra.
HFile V2 - KeyLength ValueLength Key Value
HFile V3 - KeyLength ValueLength Key Value TagsLength Tags
Even if there are no tags, a 0 tags length will have to be written.
Tags length will be stored with 2 bytes.
+1 for documenting.
> Document HFile v3
> -----------------
>
> Key: HBASE-11729
> URL: https://issues.apache.org/jira/browse/HBASE-11729
> Project: HBase
> Issue Type: Task
> Components: documentation, HFile
> Affects Versions: 0.98.0
> Reporter: Sean Busbey
>
> 0.98 added HFile v3. There are a couple of mentions of it in the book on the
> sections on cell tags, but there isn't an actual overview or design
> explanation like there is for [HFile
> v2|http://hbase.apache.org/book/hfilev2.html].
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