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/tags/release-0.1-rc2/hive/external/ql/src/java/org/apache/hadoop/hive/ql/io/SequenceFileInputFormatChecker.java

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Java | 53 lines | 26 code | 6 blank | 21 comment | 2 complexity | 97665ef8691e25277344b0f3cb0e4109 MD5 | raw file
 1/**
 2 * Licensed to the Apache Software Foundation (ASF) under one
 3 * or more contributor license agreements.  See the NOTICE file
 4 * distributed with this work for additional information
 5 * regarding copyright ownership.  The ASF licenses this file
 6 * to you under the Apache License, Version 2.0 (the
 7 * "License"); you may not use this file except in compliance
 8 * with the License.  You may obtain a copy of the License at
 9 *
10 *     http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19package org.apache.hadoop.hive.ql.io;
20
21import java.io.IOException;
22import java.util.ArrayList;
23
24import org.apache.hadoop.fs.FileStatus;
25import org.apache.hadoop.fs.FileSystem;
26import org.apache.hadoop.hive.conf.HiveConf;
27import org.apache.hadoop.io.SequenceFile;
28
29/**
30 * SequenceFileInputFormatChecker.
31 *
32 */
33public class SequenceFileInputFormatChecker implements InputFormatChecker {
34
35  @Override
36  public boolean validateInput(FileSystem fs, HiveConf conf,
37      ArrayList<FileStatus> files) throws IOException {
38    if (files.size() <= 0) {
39      return false;
40    }
41    for (int fileId = 0; fileId < files.size(); fileId++) {
42      try {
43        SequenceFile.Reader reader = new SequenceFile.Reader(fs, files.get(
44            fileId).getPath(), conf);
45        reader.close();
46      } catch (IOException e) {
47        return false;
48      }
49    }
50    return true;
51  }
52
53}