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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-62) [hbase] Allow user add arbitrary key/value pairs to table and column descriptors
Date Wed, 02 Jul 2008 03:20:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-62?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12609784#action_12609784

Andrew Purtell commented on HBASE-62:

Thanks for the patch review. I have attached another patch which addresses the comments.
* Use TreeMaps with Bytes.BYTES_COMPARATOR. Thanks for the advice.
* Fixed outdated Javadoc from a previous attempt.

Regarding HTableDescriptor and HColumnDescriptor migration, HCD has been self-migrating for
a while but HTD is not yet. The hbase-62 patch includes changes which make HTD self-versioning,
but HTD.readFields is not compatible with what is on disk today. So HTDs for all tables need
to be rewritten as part of migration. 

> [hbase] Allow user add arbitrary key/value pairs to table and column descriptors
> --------------------------------------------------------------------------------
>                 Key: HBASE-62
>                 URL: https://issues.apache.org/jira/browse/HBASE-62
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: stack
>            Assignee: Andrew Purtell
>            Priority: Trivial
>         Attachments: hbase-62-r673137.patch, hbase-62-r673264.patch
> Folks have asked if they can tag columns and tables with markings of their own designation.
 Examples include 'type' and 'descriptiion'. 

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