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From "Jesse Yates (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5723) Simple Design of Secondary Index
Date Fri, 06 Apr 2012 15:55:23 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248426#comment-13248426
] 

Jesse Yates commented on HBASE-5723:
------------------------------------

There is a lot of work that the Lily guys have done along the lines of ensuring consistency,
but basically revolves around using a WAL for making sure the edits get back in. Personally,
I find their approach a bit heavy handed (esp with the coprocessor framework _now_ available,
though it makes sense before CPs). They also have done a lot of work (open source!) for indexing
different data types, integration with Solr, etc. Either way, worth taking a dive into their
stuff, if only for inspiration and seeing what people who have thought a lot about this problem
have some up with.
                
> 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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