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https://issues.apache.org/jira/browse/OAK-2944?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Marth updated OAK-2944:
-------------------------------
Labels: perfomance (was: )
> Support merge iterator for union order by queries
> -------------------------------------------------
>
> Key: OAK-2944
> URL: https://issues.apache.org/jira/browse/OAK-2944
> Project: Jackrabbit Oak
> Issue Type: Sub-task
> Components: query
> Reporter: Amit Jain
> Assignee: Amit Jain
> Labels: perfomance
> Fix For: 1.3.1
>
> Attachments: OAK-2618.patch
>
>
> Currently, any order by union queries (including optimized OR XPATH) scan a
> much larger set when returning the results even when the individual queries
> are sorted by the index itself.
> We should have a merge iterator which would scan a much smaller set as the
> individual queries would be sorted.
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