/**
* 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.hadoop.streaming;
import java.io.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* This class tests hadoopStreaming in MapReduce local mode.
* This testcase looks at different cases of tab position in input.
*/
public class TestStreamingKeyValue extends TestStreaming
{
static final Log LOG = LogFactory.getLog(TestStreamingKeyValue.class);
protected File INPUT_FILE = new File("input.txt");
protected File OUTPUT_DIR = new File("stream_out");
// First line of input has 'key' 'tab' 'value'
// Second line of input starts with a tab character.
// So, it has empty key and the whole line as value.
// Third line of input does not have any tab character.
// So, the whole line is the key and value is empty.
protected String input =
"roses are \tred\t\n\tviolets are blue\nbunnies are pink\n" +
"this is for testing a big\tinput line\n" +
"small input\n";
protected String outputExpect =
"\tviolets are blue\nbunnies are pink\t\n" +
"roses are \tred\t\n" +
"small input\t\n" +
"this is for testing a big\tinput line\n";
public TestStreamingKeyValue() throws IOException
{
super();
setInputFile(INPUT_FILE);
setOutputDir(OUTPUT_DIR);
setInputString(input);
setExpectedOutput(outputExpect);
}
protected String[] genArgs() {
return new String[] {
"-input", INPUT_FILE.getAbsolutePath(),
"-output", OUTPUT_DIR.getAbsolutePath(),
"-mapper", "cat",
"-jobconf", "keep.failed.task.files=true",
"-jobconf", "stream.non.zero.exit.is.failure=true",
"-jobconf", "stream.tmpdir="+System.getProperty("test.build.data","/tmp")
};
}
public static void main(String[]args) throws Exception
{
new TestStreamingKeyValue().testCommandLine();
}
}