Alexander L created LUCENE-9971:
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Summary: SortedSetDocValuesFacetCounts throws exception in case of
unseen dimension (unlike other Facet implementations)
Key: LUCENE-9971
URL: https://issues.apache.org/jira/browse/LUCENE-9971
Project: Lucene - Core
Issue Type: Improvement
Reporter: Alexander L
Unlike other org.apache.lucene.facet.Facet interface implementations,
SortedSetDocValuesFacetCounts and ConcurrentSortedSetDocValuesFacetCounts
[throw an exception in case of unseen dimension in the getTopChildren()
method|[https://github.com/apache/lucene/blob/main/lucene/facet/src/java/org/apache/lucene/facet/sortedset/SortedSetDocValuesFacetCounts.java#L99].]
It is inconsistent with [Facet interface
documentation|https://github.com/apache/lucene/blob/main/lucene/facet/src/java/org/apache/lucene/facet/Facets.java#L33]
and not pleasant to deal with: in our case requested dimensions can be
manually specified by the user, so we should always catch that and check the
exception message to be sure of the exact cause.
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