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https://issues.apache.org/jira/browse/LUCENE-6421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14493849#comment-14493849
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Robert Muir commented on LUCENE-6421:
-------------------------------------
final result:
{noformat}
Report after iter 19:
Chart saved to out.png... (wd: /home/rmuir/workspace/util/src/python)
Task QPS trunk StdDev QPS patch StdDev
Pct diff
MultiPhraseHHH 0.35 (6.3%) 0.35 (5.7%)
2.2% ( -9% - 15%)
MultiPhraseHHL 17.21 (1.8%) 17.65 (1.3%)
2.6% ( 0% - 5%)
MultiPhraseHHM 5.12 (2.8%) 5.42 (1.9%)
5.7% ( 1% - 10%)
MultiPhraseMMH 33.71 (2.9%) 39.70 (1.2%)
17.8% ( 13% - 22%)
MultiPhraseMML 160.35 (1.5%) 201.54 (1.4%)
25.7% ( 22% - 29%)
MultiPhraseMMM 72.26 (2.2%) 95.67 (2.0%)
32.4% ( 27% - 37%)
{noformat}
> Add two-phase support to MultiPhraseQuery
> -----------------------------------------
>
> Key: LUCENE-6421
> URL: https://issues.apache.org/jira/browse/LUCENE-6421
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Robert Muir
> Attachments: LUCENE-6421.patch, LUCENE-6421_luceneutil.patch
>
>
> Two-phase support currently works for both sloppy and exact Scorers but it
> does not work if you have multiple terms at the same position
> (MultiPhraseQuery).
> This is because UnionPostingsEnum.nextDoc() aggressively reads and merges all
> the positions. Even making this initialization lazy might just be enough?
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