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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5723) Simple Design of Secondary Index
Date Thu, 05 Apr 2012 17:58:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247438#comment-13247438
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Todd Lipcon commented on HBASE-5723:
------------------------------------

The design doc doesn't make any reference to consistency. How do you ensure consistency of
the index? To do proper indexes you really need cross-table transactions, or at least a mechanism
for eventual consistency if that's all you plan on providing.
                
> Simple Design of Secondary Index
> --------------------------------
>
>                 Key: HBASE-5723
>                 URL: https://issues.apache.org/jira/browse/HBASE-5723
>             Project: HBase
>          Issue Type: New Feature
>          Components: coprocessors
>            Reporter: ShiXing
>            Priority: Minor
>         Attachments: Simple Design of HBase SecondaryIndex.pdf
>
>
> Use coprocessor to create index. And primary tables' compaction to purge the stale data.

> Attach file is the Design of the Seconday Index.

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