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https://issues.apache.org/jira/browse/LUCENE-8890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand moved SOLR-12736 to LUCENE-8890:
---------------------------------------------
Affects Version/s: (was: 8.0)
Lucene Fields: New
Key: LUCENE-8890 (was: SOLR-12736)
Project: Lucene - Core (was: Solr)
> Parallel Iteration of Lists
> ---------------------------
>
> Key: LUCENE-8890
> URL: https://issues.apache.org/jira/browse/LUCENE-8890
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Sven Amann
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Solr/contrib/analysis-extras contains the class `BooleanWeight`, which
> maintains two lists that are repeatedly iterated over in parallel. While both
> lists do have the same length, this is not immediately obvious from the
> locations the iterate them. A future change may lead to the lists getting our
> of sync, which would break the iterations. Moreover, there is no established
> language feature for iterating two lists, which is why the iteration is
> implemented differently in various locations throughout the class.
> I created a patch that joins the two lists into one, which simplifies the
> iteration, unifies the implementation in all places, and prevents that the
> two lists get out of sync without becoming aware of the parallel iterations.
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