uschindler commented on code in PR #12183:
URL: https://github.com/apache/lucene/pull/12183#discussion_r1125014135
##########
lucene/core/src/java/org/apache/lucene/search/FieldExistsQuery.java:
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@@ -110,59 +116,91 @@ public int hashCode() {
@Override
public Query rewrite(IndexSearcher indexSearcher) throws IOException {
IndexReader reader = indexSearcher.getIndexReader();
- boolean allReadersRewritable = true;
+ final List<FutureTask<Boolean>> tasks =
+ reader.leaves().stream()
+ .map(
+ ctx ->
+ new FutureTask<>(
+ () -> {
+ AtomicBoolean allReadersRewritable = new
AtomicBoolean(true);
+ LeafReader leaf = ctx.reader();
+ FieldInfos fieldInfos = leaf.getFieldInfos();
+ FieldInfo fieldInfo = fieldInfos.fieldInfo(field);
+ if (fieldInfo == null) {
+ allReadersRewritable.set(false);
+ return allReadersRewritable.get();
+ }
Review Comment:
FiekdExistsQuery is cheap in general. No need to parallelize anything. Sorry
this makes no sense.
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