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From "Clint Morgan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1726) Migration to 0.20 looses index information from HTableDescriptor
Date Fri, 31 Jul 2009 22:22:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737744#action_12737744

Clint Morgan commented on HBASE-1726:

Edited the migration wiki:

Removed the line about unknown mirgation for trx/indexing.

Added a paragraph about running the tool above.

> 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
>         Attachments: 1726.patch
> 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

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