Upgrading from 2.3.2 to 2.9.4 I get NPE as below
Caused by: java.lang.NullPointerException
at
org.apache.lucene.search.FieldSortedHitQueue$1.createValue(FieldSortedHitQueue.java:224)
at
org.apache.lucene.search.FieldCacheImpl$Cache.get(FieldCacheImpl.java:224)
at
org.apache.lucene.search.FieldSortedHitQueue.getCachedComparator(FieldSortedHitQueue.java:176)
at
org.apache.lucene.search.FieldSortedHitQueue.<init>(FieldSortedHitQueue.java:56)
I have a SortField that is created something like
new SortField(fieldName, comparator)
which generates a custom SortField, but in the call to Comparators.get() fails
because createValue in FieldSortedHitQueue calls
case SortField.CUSTOM:
comparator = factory.newComparator (reader, fieldname);
and factory is null.
Is this a bug? I know FSHQ is deprecated, but presumably it should still work
with a SortField containing a comparator?
Thanks
Antony
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