/**
* 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.mapred;
import java.io.IOException;
import org.apache.hadoop.fs.CommonConfigurationKeys;
import org.apache.hadoop.util.VersionInfo;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Test the version check the TT performs when connecting to the JT
*/
public class TestTaskTrackerVersionCheck {
/**
* Test the default TT version checking
*/
@Test
public void testDefaultVersionCheck() throws IOException {
MiniMRCluster mr = null;
try {
JobConf jtConf = new JobConf();
mr = new MiniMRCluster(1, "file:///", 1, null, null, jtConf);
TaskTracker tt = mr.getTaskTrackerRunner(0).getTaskTracker();
String currBuildVersion = VersionInfo.getBuildVersion();
String currVersion = VersionInfo.getVersion();
assertTrue(tt.isPermittedVersion(currBuildVersion, currVersion));
assertFalse("We disallow different versions",
tt.isPermittedVersion(currBuildVersion+"x", currVersion+"x"));
assertFalse("We disallow different full versions with same version",
tt.isPermittedVersion(currBuildVersion+"x", currVersion));
try {
tt.isPermittedVersion(currBuildVersion, currVersion+"x");
fail("Matched full version with mismatched version");
} catch (AssertionError ae) {
// Expected. The versions should always match if the full
// versions match as the full version contains the version.
}
} finally {
if (mr != null) {
mr.shutdown();
}
}
}
/**
* Test the "relaxed" TT version checking
*/
@Test
public void testRelaxedVersionCheck() throws IOException {
MiniMRCluster mr = null;
try {
JobConf jtConf = new JobConf();
jtConf.setBoolean(
CommonConfigurationKeys.HADOOP_RELAXED_VERSION_CHECK_KEY, true);
mr = new MiniMRCluster(1, "file:///", 1, null, null, jtConf);
TaskTracker tt = mr.getTaskTrackerRunner(0).getTaskTracker();
String currFullVersion = VersionInfo.getBuildVersion();
String currVersion = VersionInfo.getVersion();
assertTrue(tt.isPermittedVersion(currFullVersion, currVersion));
assertFalse("We dissallow different versions",
tt.isPermittedVersion(currFullVersion+"x", currVersion+"x"));
assertTrue("We allow different full versions with same version",
tt.isPermittedVersion(currFullVersion+"x", currVersion));
} finally {
if (mr != null) {
mr.shutdown();
}
}
}
/**
* Test no TT version checking
*/
@Test
public void testNoVersionCheck() throws IOException {
MiniMRCluster mr = null;
try {
JobConf jtConf = new JobConf();
jtConf.setBoolean(
CommonConfigurationKeys.HADOOP_SKIP_VERSION_CHECK_KEY, true);
mr = new MiniMRCluster(1, "file:///", 1, null, null, jtConf);
TaskTracker tt = mr.getTaskTrackerRunner(0).getTaskTracker();
String currFullVersion = VersionInfo.getBuildVersion();
String currVersion = VersionInfo.getVersion();
assertTrue(tt.isPermittedVersion(currFullVersion, currVersion));
assertTrue(tt.isPermittedVersion(currFullVersion+"x", currVersion+"x"));
assertTrue(tt.isPermittedVersion(currFullVersion+"x", currVersion));
} finally {
if (mr != null) {
mr.shutdown();
}
}
}
}