Fix pair

src/main/java/com/nvidia/spark/rapids/jni/Pair.java

@@ -0,0 +1,23 @@
+package com.nvidia.spark.rapids.jni;
+
+public class Pair<K, V> {
+    private final K left;
+    private final V right;
+
+    public Pair(K left, V right) {
+        this.left = left;
+        this.right = right;
+    }
+
+    public K getLeft() {
+        return left;
+    }
+
+    public V getRight() {
+        return right;
+    }
+
+    public static <K, V> Pair<K, V> of(K left, V right) {
+        return new Pair<>(left, right);
+    }
+}

src/main/java/com/nvidia/spark/rapids/jni/kudo/ColumnViewInfo.java

@@ -3,6 +3,8 @@
 import ai.rapids.cudf.DType;
 import ai.rapids.cudf.DeviceMemoryBuffer;
 
+import static com.nvidia.spark.rapids.jni.kudo.KudoSerializer.safeLongToInt;
+
 
 public class ColumnViewInfo {
     private final DType dtype;

src/main/java/com/nvidia/spark/rapids/jni/kudo/KudoSerializer.java

@@ -1,6 +1,7 @@
 package com.nvidia.spark.rapids.jni.kudo;
 
 import ai.rapids.cudf.*;
+import com.nvidia.spark.rapids.jni.Pair;
 import com.nvidia.spark.rapids.jni.schema.Visitors;
 
 import java.io.*;
@@ -102,7 +103,7 @@ public SerializedTable readOneTableBuffer(InputStream in) {
   }
 
   public Pair<HostMergeResult, MergeMetrics> mergeToHost(List<SerializedTable> serializedTables,
-      Schema schema) {
+                                                         Schema schema) {
     MergeMetrics.Builder metricsBuilder = MergeMetrics.builder();
 
     MergedInfoCalc mergedInfoCalc = withTime(() -> MergedInfoCalc.calc(schema, serializedTables),