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From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5723) Simple Design of Secondary Index
Date Fri, 06 Apr 2012 04:15:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248024#comment-13248024
] 

Todd Lipcon commented on HBASE-5723:
------------------------------------

If this implementation isn't giving you any consistency, then why is it any better than just
having the client do two puts?

I think for us to consider adding an indexing library to HBase proper, it needs to have stronger
semantics. The idea that an index may be incorrect in the case of failures does not seem like
something we should ship.
                
> 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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