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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-661) Allow to specify a user supplied row key comparator for a table
Date Wed, 10 Sep 2008 19:21:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629923#action_12629923

stack commented on HBASE-661:

Clint: I'd suggest you become a watcher on HBASE-880 and HBASE-849 so you can keep an eye
on progress and ensure your needs are covered.

> Allow to specify a user supplied row key comparator for a table 
> ----------------------------------------------------------------
>                 Key: HBASE-661
>                 URL: https://issues.apache.org/jira/browse/HBASE-661
>             Project: Hadoop HBase
>          Issue Type: New Feature
>          Components: client, master, regionserver
>    Affects Versions: 0.2.0
>            Reporter: Clint Morgan
>            Assignee: Clint Morgan
> Now that row keys are byte arrays, users should be able to specify a comparator at table
creation time.
> My use case for this is to implement secondary indexes. In this case, row keys for the
index tables will be constructed from an optional prefix of the original row key as well as
the content of column that is being indexed. Then the comparator will first compare based
on the key prefix, and break ties by deserializing the column values and using the deserialized
type's compareTo method.

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