Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/19601#discussion_r151406905
--- Diff:
sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/UnsafeColumnVector.java
---
@@ -0,0 +1,517 @@
+/*
+ * 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.
+ */
+package org.apache.spark.sql.execution.vectorized;
+
+import java.nio.ByteBuffer;
+
+import org.apache.commons.lang.NotImplementedException;
+
+import org.apache.spark.sql.catalyst.expressions.UnsafeArrayData;
+import org.apache.spark.sql.types.*;
+import org.apache.spark.unsafe.Platform;
+
+/**
+ * A column backed by UnsafeArrayData on byte[].
+ */
+public final class UnsafeColumnVector extends WritableColumnVector {
--- End diff --
These two methods `getBoolean` and `getBooleans` are used
[here](github.com/apache/spark/blob/dce1610ae376af00712ba7f4c99bfb4c006dbaec/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/ColumnarArray.java)
and
[there](github.com/apache/spark/blob/dce1610ae376af00712ba7f4c99bfb4c006dbaec/sql/core/src/main/java/org/apache/spark/sql/execution/vectorized/ColumnarArray.java)
in `ColumnarArray`.
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