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https://issues.apache.org/jira/browse/HBASE-1726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737321#action_12737321
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Andrew Purtell commented on HBASE-1726:
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Maybe we need some kind of hook out to contribs for migration?
> Migration to 0.20 looses index information from HTableDescriptor
> ----------------------------------------------------------------
>
> Key: HBASE-1726
> URL: https://issues.apache.org/jira/browse/HBASE-1726
> Project: Hadoop HBase
> Issue Type: Bug
> Components: contrib
> Reporter: Clint Morgan
> Fix For: 0.20.0
>
>
> In 0.19 index info was stored as a private field, and written specially in
> the Writable impl of HTD. In 0.20 it is stored in the general values map
> under the key "INDEXES". So migration needs to read in the old HTD format,
> and store the indexes in the values map. I wrote a quick standalone thing to
> do this. Can someone point me where to plug this into general migration
> process?
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