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https://issues.apache.org/jira/browse/HBASE-20592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16496921#comment-16496921
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Peter Somogyi commented on HBASE-20592:
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I like your idea. I'll put up a patch tomorrow.

> Create a tool to verify tables do not have prefix tree encoding
> ---------------------------------------------------------------
>
>                 Key: HBASE-20592
>                 URL: https://issues.apache.org/jira/browse/HBASE-20592
>             Project: HBase
>          Issue Type: New Feature
>          Components: Operability, tooling
>            Reporter: Peter Somogyi
>            Assignee: Peter Somogyi
>            Priority: Minor
>             Fix For: 2.1.0
>
>         Attachments: HBASE-20592.master.001.patch, 
> HBASE-20592.master.002.patch, HBASE-20592.master.003.patch, 
> HBASE-20592.master.004.patch, HBASE-20592.master.005.patch
>
>
> HBase 2.0.0 removed PREFIX_TREE encoding so users need to modify data block 
> encoding to something else before upgrading to HBase 2.0+. A tool would help 
> users to verify that there are no tables left with PREFIX_TREE encoding.
> The tool needs to check the following:
>  * There are no tables where DATA_BLOCK_ENCODING => 'PREFIX_TREE'
>  * -Check existing hfiles that none of them have PREFIX_TREE encoding (in 
> case table description is changed but hfiles were not rewritten)-



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