javanna commented on code in PR #13542:
URL: https://github.com/apache/lucene/pull/13542#discussion_r1750711025
##########
lucene/core/src/java/org/apache/lucene/search/IndexSearcher.java:
##########
@@ -363,7 +374,88 @@ public static LeafSlice[] slices(
LeafSlice[] slices = new LeafSlice[groupedLeaves.size()];
int upto = 0;
for (List<LeafReaderContext> currentLeaf : groupedLeaves) {
- slices[upto] = new LeafSlice(currentLeaf);
+ slices[upto] =
+ new LeafSlice(
+ new ArrayList<>(
+ currentLeaf.stream()
+ .map(LeafReaderContextPartition::createForEntireSegment)
+ .toList()));
+ ++upto;
+ }
+
+ return slices;
+ }
+
+ /**
+ * Creates leaf slices that leverage intra-segment concurrency by splitting
segments into multiple
+ * partitions according to the provided max number of documents per slice
and maximum number of
+ * segments per slice. If a segment holds more documents than the provided
max per slice, it gets
+ * split into equal size partitions that each gets its own slice assigned.
+ *
+ * <p>Note: this method is not yet called by the default slicing
implementation {@link
+ * #slices(List)}. Certain queries that require segment-level computation
ahead of time duplicate
Review Comment:
Will apply this suggestion. I am removing the explicit mention of KNN
queries, because they are a bit of a different world that needs specific
treatment, in that the bulk of the work is done as part of query rewrite that
parallelizes across segments bypassing the slicing mechanism.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For additional commands, e-mail: issues-h...@lucene.apache.org
