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https://issues.apache.org/jira/browse/LUCENE-2831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12978023#action_12978023
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Yonik Seeley commented on LUCENE-2831:
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Regarding this assert in IndexSearcher:
// TODO: eable this assert once SolrIndexReader and friends are refactored
to use ReaderContext
// We can't assert this here since SolrIndexReader will fail in some
contexts - once solr is consistent we should be fine here
// assert context.isTopLevel: "IndexSearcher's ReaderContext must be
topLevel for reader" + context.reader;
This is a bug in ReaderUtil.build() that when passed a segment reader, it sets
isTopLevel to false.
You got bit by those extra booleans ;-)
When I hacked ReaderContext to just set isTopLevel to parent==null, all the
solr tests passed w/ the assertion enabled.
> Revise Weight#scorer & Filter#getDocIdSet API to pass Readers context
> ---------------------------------------------------------------------
>
> Key: LUCENE-2831
> URL: https://issues.apache.org/jira/browse/LUCENE-2831
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Affects Versions: 4.0
> Reporter: Simon Willnauer
> Assignee: Simon Willnauer
> Fix For: 4.0
>
> Attachments: LUCENE-2831.patch, LUCENE-2831.patch, LUCENE-2831.patch,
> LUCENE-2831.patch, LUCENE-2831.patch, LUCENE-2831.patch
>
>
> Spinoff from LUCENE-2694 - instead of passing a reader into Weight#scorer(IR,
> boolean, boolean) we should / could revise the API and pass in a struct that
> has parent reader, sub reader, ord of that sub. The ord mapping plus the
> context with its parent would make several issues way easier. See
> LUCENE-2694, LUCENE-2348 and LUCENE-2829 to name some.
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