[LUCENE-5115] Make WAH8DocIdSet compute its cardinality at building time and use it for cost() - ASF JIRA

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Type: Improvement
Status: Closed
Priority: Minor
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 4.5
Component/s: None
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Lucene Fields:

New

Description

DocIdSetIterator.cost() accuracy can be important for the performance of some queries (eg.ConjunctionScorer). Since WAH8DocIdSet is immutable, we could compute its cardinality at building time and use it for the cost function.

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LUCENE-5115.patch
16/Jul/13 08:40
13 kB
Adrien Grand

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Assignee:: Adrien Grand

Reporter:: Adrien Grand

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Dates

Created:: 15/Jul/13 21:44

Updated:: 28/Aug/22 13:49

Resolved:: 19/Jul/13 07:32