rmuir commented on code in PR #14302:
URL: https://github.com/apache/lucene/pull/14302#discussion_r1973206235


##########
lucene/core/src/java/org/apache/lucene/index/IndexReader.java:
##########
@@ -253,8 +253,10 @@ public final void decRef() throws IOException {
     final int rc = refCount.decrementAndGet();
     if (rc == 0) {
       closed = true;
-      try (Closeable finalizer = this::reportCloseToParentReaders;
-          Closeable finalizer1 = this::notifyReaderClosedListeners) {
+      try (@SuppressWarnings("unused")
+              Closeable finalizer = this::reportCloseToParentReaders;
+          @SuppressWarnings("unused")
+              Closeable finalizer1 = this::notifyReaderClosedListeners) {

Review Comment:
   Example of what i'm seeing. I can take care in a followup PR if it does not 
fail build for now.
   ```
   diff --git a/lucene/core/src/java/org/apache/lucene/index/IndexWriter.java 
b/lucene/core/src/java/org/apache/lucene/index/IndexWriter.java
   index a8eca64c962..0f7693eedd1 100644
   --- a/lucene/core/src/java/org/apache/lucene/index/IndexWriter.java
   +++ b/lucene/core/src/java/org/apache/lucene/index/IndexWriter.java
   @@ -3333,7 +3333,7 @@ public class IndexWriter
                    infoStream.message("IW", "now abort pending addIndexes 
merge");
                  }
                  merge.setAborted();
   -              merge.close(false, false, mr -> {});
   +              merge.close(false, false, _ -> {});
                  onMergeFinished(merge);
                });
            pendingAddIndexesMerges.clear();
   @@ -3350,7 +3350,7 @@ public class IndexWriter
            handleMergeException(t, merge);
          } finally {
            synchronized (IndexWriter.this) {
   -          merge.close(success, false, mr -> {});
   +          merge.close(success, false, _ -> {});
              onMergeFinished(merge);
            }
          }
   @@ -3731,7 +3731,7 @@ public class IndexWriter
                    // necessary files to disk and checkpointed them.
                    pointInTimeMerges =
                        preparePointInTimeMerge(
   -                        toCommit, stopAddingMergedSegments::get, 
MergeTrigger.COMMIT, sci -> {});
   +                        toCommit, stopAddingMergedSegments::get, 
MergeTrigger.COMMIT, _ -> {});
                  }
                }
                success = true;
   ```



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