diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt index d6d61d1dedc..a0fce4b780b 100644 --- a/hadoop-mapreduce-project/CHANGES.txt +++ b/hadoop-mapreduce-project/CHANGES.txt @@ -19,6 +19,11 @@ Release 2.0.5-beta - UNRELEASED when compared to 1.x. This breaks 0.23.x users of one API in Job. (Mayank Bansal via vinodkv) + MAPREDUCE-5237. Add methods that were removed from ClusterStatus back into + 2.x so as to be compatible with 1.x. Incompatible as + ClusterStatus.UNINITIALIZED_MEMORY_VALUE is a long now and so breaks 0.23.x + but it shouldn't be a big deal in reality. (Zhijie Shen via vinodkv) + NEW FEATURES HADOOP-8562. Enhancements to support Hadoop on Windows Server and Windows diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ClusterStatus.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ClusterStatus.java index c527a2776ab..5b10ea1c491 100644 --- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ClusterStatus.java +++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/ClusterStatus.java @@ -23,14 +23,13 @@ import java.io.DataOutput; import java.io.IOException; import java.util.ArrayList; import java.util.Collection; +import java.util.Collections; import org.apache.hadoop.classification.InterfaceAudience; import org.apache.hadoop.classification.InterfaceStability; import org.apache.hadoop.io.Text; import org.apache.hadoop.io.Writable; import org.apache.hadoop.io.WritableUtils; -import org.apache.hadoop.mapreduce.ClusterMetrics; -import org.apache.hadoop.mapreduce.TaskTrackerInfo; import org.apache.hadoop.mapreduce.Cluster.JobTrackerStatus; import org.apache.hadoop.util.StringInterner; @@ -175,7 +174,7 @@ public class ClusterStatus implements Writable { } - public static final int UNINITIALIZED_MEMORY_VALUE = -1; + public static final long UNINITIALIZED_MEMORY_VALUE = -1; private int numActiveTrackers; private Collection activeTrackers = new ArrayList(); @@ -316,7 +315,33 @@ public class ClusterStatus implements Writable { } return blacklistedTrackers; } - + + /** + * Get the names of graylisted task trackers in the cluster. + * + * The gray list of trackers is no longer available on M/R 2.x. The function + * is kept to be compatible with M/R 1.x applications. + * + * @return an empty graylisted task trackers in the cluster. + */ + @Deprecated + public Collection getGraylistedTrackerNames() { + return Collections.emptySet(); + } + + /** + * Get the number of graylisted task trackers in the cluster. + * + * The gray list of trackers is no longer available on M/R 2.x. The function + * is kept to be compatible with M/R 1.x applications. + * + * @return 0 graylisted task trackers in the cluster. + */ + @Deprecated + public int getGraylistedTrackers() { + return 0; + } + /** * Get the number of blacklisted task trackers in the cluster. * @@ -413,6 +438,20 @@ public class ClusterStatus implements Writable { return blacklistedTrackersInfo; } + /** + * Get the current state of the JobTracker, + * as {@link JobTracker.State} + * + * {@link JobTracker.State} should no longer be used on M/R 2.x. The function + * is kept to be compatible with M/R 1.x applications. + * + * @return the invalid state of the JobTracker. + */ + @Deprecated + public JobTracker.State getJobTrackerState() { + return JobTracker.State.RUNNING; + } + public void write(DataOutput out) throws IOException { if (activeTrackers.size() == 0) { out.writeInt(numActiveTrackers); diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobTracker.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobTracker.java new file mode 100644 index 00000000000..7999500881b --- /dev/null +++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobTracker.java @@ -0,0 +1,35 @@ +/** + * 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; + +/** + * JobTracker is no longer used since M/R 2.x. This is a dummy + * JobTracker class, which is used to be compatible with M/R 1.x applications. + */ +public class JobTracker { + + /** + * State is no longer used since M/R 2.x. It is kept in case + * that M/R 1.x applications may still use it. + */ + public static enum State { + INITIALIZING, RUNNING + } + +} diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestClusterStatus.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestClusterStatus.java new file mode 100644 index 00000000000..7a35ede1a55 --- /dev/null +++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapred/TestClusterStatus.java @@ -0,0 +1,41 @@ +/** + * 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 junit.framework.Assert; + +import org.junit.Test; + +public class TestClusterStatus { + + private ClusterStatus clusterStatus = new ClusterStatus(); + + @SuppressWarnings("deprecation") + @Test (timeout = 1000) + public void testGraylistedTrackers() { + Assert.assertEquals(0, clusterStatus.getGraylistedTrackers()); + Assert.assertTrue(clusterStatus.getGraylistedTrackerNames().isEmpty()); + } + + @SuppressWarnings("deprecation") + @Test (timeout = 1000) + public void testJobTrackerState() { + Assert.assertEquals(JobTracker.State.RUNNING, + clusterStatus.getJobTrackerState()); + } +}