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https://issues.apache.org/jira/browse/HBASE-20592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16490724#comment-16490724
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Peter Somogyi commented on HBASE-20592:
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Created HBASE-20649 for "Check existing hfiles that none of them have
PREFIX_TREE encoding (in case table description is changed but hfiles were not
rewritten)"
> 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 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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