Github user sitalkedia commented on a diff in the pull request:
https://github.com/apache/spark/pull/15408#discussion_r82531240
--- Diff:
core/src/main/java/org/apache/spark/io/NioBasedBufferedFileInputStream.java ---
@@ -0,0 +1,77 @@
+/*
+ * Licensed 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.io;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.channels.FileChannel;
+
+/**
+ * {@link InputStream} implementation which uses direct buffer
+ * to read a file to avoid extra copy of data between Java and
+ * native memory which happens when using {@link
java.io.BufferedInputStream}
+ *
+ */
+public final class NioBasedBufferedFileInputStream extends InputStream {
+
+ ByteBuffer bb;
+
+ FileChannel ch;
+
+ public NioBasedBufferedFileInputStream(File file, int bufferSize) throws
IOException {
--- End diff --
that makes sense, changed accordingly.
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