Merge branch 'main' into fix_array_of_strings_summary

Author: leerho

.editorconfig

@@ -0,0 +1,28 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+root = true
+
+[*]
+end_of_line = lf
+indent_style = space
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.java]
+indent_size = tab
+tab_width = 2

.github/workflows/javadoc.yml

@@ -30,7 +30,7 @@ jobs:
         with:
           java-version: '25'
           distribution: 'temurin'
-          cache: 'maven' 
+          cache: 'maven'
 
       - name: Build and Generate Javadoc  # POM is configured to output to target/site/apidocs
         run: mvn javadoc:javadoc
@@ -80,4 +80,3 @@ jobs:
       - name: Confirm Deployment
         if: success()
         run: echo "Javadoc for ${{ github.event.inputs.tag_ref }} is now live on gh-pages."
-

src/main/java/org/apache/datasketches/tdigest/TDigestDouble.java

@@ -426,7 +426,7 @@ public static TDigestDouble heapify(final MemorySegment seg, final boolean isFlo
       return new TDigestDouble(reverseMerge, k, value, value, new double[] {value}, new long[] {1}, 1, null);
     }
     final int numCentroids = posSeg.getInt();
-    posSeg.getInt(); // unused
+    final int numBuffered = posSeg.getInt();
     final double min;
     final double max;
     if (isFloat) {
@@ -444,7 +444,11 @@ public static TDigestDouble heapify(final MemorySegment seg, final boolean isFlo
       weights[i] = isFloat ? posSeg.getInt() : posSeg.getLong();
       totalWeight += weights[i];
     }
-    return new TDigestDouble(reverseMerge, k, min, max, means, weights, totalWeight, null);
+    final double[] buffered = new double[numBuffered];
+    for (int i = 0; i < numBuffered; i++) {
+      buffered[i] = isFloat ? posSeg.getFloat() : posSeg.getDouble();
+    }
+    return new TDigestDouble(reverseMerge, k, min, max, means, weights, totalWeight, buffered);
   }
 
   // compatibility with the format of the reference implementation