Julie Tibshirani created LUCENE-5929:
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Summary: Standard highlighting doesn't work for
ToParentBlockJoinQuery
Key: LUCENE-5929
URL: https://issues.apache.org/jira/browse/LUCENE-5929
Project: Lucene - Core
Issue Type: Bug
Components: modules/highlighter
Reporter: Julie Tibshirani
Because WeightedSpanTermExtractor#extract doesn't check for
ToParentBlockJoinQuery, the Highlighter class fails to produce highlights for
this type of query.
At first it may seem like there's no issue, because ToParentBlockJoinQuery only
returns parent documents, while the highlighting applies to children. But if a
client can directly supply the text from child documents (as elasticsearch does
if _source is enabled), then highlighting will unexpectedly fail.
A test case that triggers the bug is attached. The same issue exists for
ToChildBlockJoinQuery.
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