expani commented on code in PR #14511:
URL: https://github.com/apache/lucene/pull/14511#discussion_r2047828296
##########
lucene/core/src/java/org/apache/lucene/codecs/lucene103/Lucene103PostingsReader.java:
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@@ -282,6 +288,10 @@ public PostingsEnum postings(
@Override
public ImpactsEnum impacts(FieldInfo fieldInfo, BlockTermState state, int
flags)
throws IOException {
+ if (state.docFreq <= BLOCK_SIZE) {
+ // no skip data
+ return new SlowImpactsEnum(postings(fieldInfo, state, null, flags));
+ }
Review Comment:
DUMMY_IMPACTS in PostingsReader is a `List<Impact>` ( 10.1.0 )
whereas
the DUMMY_IMPACTS returned by SlowImpactsEnum ( 9.11.1 ) was a `Impacts`
which would still apply for cases where using the skip list doesn't make sense
`state.docFreq <= BLOCK_SIZE`
I picked this check from `Lucene99PostingsReader` where we stored a default
impact of freq=1 even if the field was indexed with `IndexOptions.DOCS`
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