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https://issues.apache.org/jira/browse/TAJO-1494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14394221#comment-14394221
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ASF GitHub Bot commented on TAJO-1494:
--------------------------------------
Github user blrunner commented on a diff in the pull request:
https://github.com/apache/tajo/pull/489#discussion_r27721152
--- Diff:
tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/FSDataInputChannel.java
---
@@ -0,0 +1,67 @@
+/**
+ * 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.tajo.storage;
+
+import org.apache.hadoop.fs.ByteBufferReadable;
+import org.apache.hadoop.fs.FSDataInputStream;
+import org.apache.hadoop.io.IOUtils;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
+
+/**
+ * FSDataInputChannel is a NIO channel implementation of direct read
ability to read from HDFS
+ */
+public final class FSDataInputChannel extends InputChannel implements
SeekableChannel {
+
+ private ReadableByteChannel channel;
+ private FSDataInputStream inputStream;
+ private boolean isDirectRead;
+
+ public FSDataInputChannel(FSDataInputStream inputStream) {
+ if (inputStream.getWrappedStream() instanceof ByteBufferReadable) {
--- End diff --
Is there no necessary for checking DFSInputStream?
> Add SeekableScanner support to DelimitedTextFileScanner
> -------------------------------------------------------
>
> Key: TAJO-1494
> URL: https://issues.apache.org/jira/browse/TAJO-1494
> Project: Tajo
> Issue Type: New Feature
> Components: storage
> Reporter: Jinho Kim
> Assignee: Jinho Kim
> Attachments: TAJO-1494.patch, TAJO-1494_2.patch
>
>
> CSVFile will be deprecated. So DelimitedTextFileScanner should support
> SeekableScanner interface for BSTIndex
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