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https://issues.apache.org/jira/browse/LUCENE-3496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13123763#comment-13123763
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Martijn van Groningen commented on LUCENE-3496:
-----------------------------------------------
getDirectSource() search times:
* BYTES_VAR_SORTED: 455 ms
* BYTES_FIXED_SORTED: 713 ms
I noticed that with BYTES_VAR_SORTED the memory usage varied a lot during the
test execution from around 10MB to 320MB. The memory usage for
BYTES_FIXED_SORTED is stable around 10MB.
I'll try to use luceneutil and modify it to benchmark grouping by IDV, so
others can run performance tests as well.
> Support grouping by IndexDocValues
> ----------------------------------
>
> Key: LUCENE-3496
> URL: https://issues.apache.org/jira/browse/LUCENE-3496
> Project: Lucene - Java
> Issue Type: New Feature
> Components: modules/grouping
> Reporter: Martijn van Groningen
> Attachments: LUCENE-3496.patch, LUCENE-3496.patch
>
>
> Although IDV is not yet finalized (More particular the SortedSource). I think
> we already can discuss / investigate implementing grouping by IDV.
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