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https://issues.apache.org/jira/browse/HBASE-883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell reopened HBASE-883:
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Third time will be the charm. We took out the custom comparators because we can
see them acting as a tax on the rest of HRS: 5-10% CPU, 20% of all object
allocation (on a jgray server). But the custom comparators are used to reverse
a test to provide descending sort orders. For now we'll degrade the secondary
index capability somewhat by fixing it up to work with the custom comparators
hence no descending sort ordering.
> Secondary Indexes
> -----------------
>
> Key: HBASE-883
> URL: https://issues.apache.org/jira/browse/HBASE-883
> Project: Hadoop HBase
> Issue Type: New Feature
> Components: client, regionserver
> Reporter: Clint Morgan
> Assignee: Andrew Purtell
> Fix For: 0.19.0
>
> Attachments: hbase-883.patch, hbase-883.patch, hbase-883.patch,
> hbase-883.patch, hbase-883.patch, hbase-883.patch, hbase-883.patch,
> secondary.patch
>
>
> I'm working on a secondary index impl. The basic idea is to maintain a
> separate table per index.
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