Revert "YARN-7162. Remove XML excludes file format (rkanter)" - wrong commit message

This reverts commit 3a8d57a0a2.

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/pom.xml

@@ -42,10 +42,6 @@
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-yarn-common</artifactId>
     </dependency>
-    <dependency>
-      <groupId>org.apache.hadoop</groupId>
-      <artifactId>hadoop-hdfs-client</artifactId>
-    </dependency>
     <dependency>
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-hdfs</artifactId>

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobResourceUploader.java

@@ -36,8 +36,6 @@ import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.FileUtil;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.permission.FsPermission;
-import org.apache.hadoop.hdfs.DistributedFileSystem;
-import org.apache.hadoop.hdfs.protocol.SystemErasureCodingPolicies;
 import org.apache.hadoop.mapreduce.filecache.ClientDistributedCacheManager;
 import org.apache.hadoop.mapreduce.filecache.DistributedCache;
 
@@ -96,11 +94,6 @@ class JobResourceUploader {
         new FsPermission(JobSubmissionFiles.JOB_DIR_PERMISSION);
     mkdirs(jtFs, submitJobDir, mapredSysPerms);
 
-    if (!conf.getBoolean(MRJobConfig.MR_AM_STAGING_DIR_ERASURECODING_ENABLED,
-        MRJobConfig.DEFAULT_MR_AM_STAGING_ERASURECODING_ENABLED)) {
-      disableErasureCodingForPath(jtFs, submitJobDir);
-    }
-
     Collection<String> files = conf.getStringCollection("tmpfiles");
     Collection<String> libjars = conf.getStringCollection("tmpjars");
     Collection<String> archives = conf.getStringCollection("tmparchives");
@@ -582,14 +575,4 @@ class JobResourceUploader {
     }
     return finalPath;
   }
-
-  private void disableErasureCodingForPath(FileSystem fs, Path path)
-      throws IOException {
-    if (jtFs instanceof DistributedFileSystem) {
-      LOG.info("Disabling Erasure Coding for path: " + path);
-      DistributedFileSystem dfs = (DistributedFileSystem) jtFs;
-      dfs.setErasureCodingPolicy(path,
-          SystemErasureCodingPolicies.getReplicationPolicy().getName());
-    }
-  }
 }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java

@@ -1037,9 +1037,4 @@ public interface MRJobConfig {
   String FINISH_JOB_WHEN_REDUCERS_DONE =
       "mapreduce.job.finish-when-all-reducers-done";
   boolean DEFAULT_FINISH_JOB_WHEN_REDUCERS_DONE = true;
-
-  String MR_AM_STAGING_DIR_ERASURECODING_ENABLED =
-      MR_AM_STAGING_DIR + "erasurecoding.enabled";
-
-  boolean DEFAULT_MR_AM_STAGING_ERASURECODING_ENABLED = false;
 }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml

@@ -1260,15 +1260,6 @@
   </description>
 </property>
 
-<property>
-  <name>yarn.app.mapreduce.am.staging-dir.erasurecoding.enabled</name>
-  <value>false</value>
-  <description>Whether Erasure Coding should be enabled for
-  files that are copied to the MR staging area. This is a job-level
-  setting.
-  </description>
-</property>
-
 <property>
   <name>mapreduce.am.max-attempts</name>
   <value>2</value>

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/TestJobResourceUploader.java

@@ -20,11 +20,6 @@ package org.apache.hadoop.mapreduce;
 
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
-import static org.mockito.Mockito.never;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.times;
-import static org.mockito.Matchers.any;
-import static org.mockito.Matchers.eq;
 
 import java.io.IOException;
 import java.net.URI;
@@ -41,12 +36,9 @@ import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.permission.FsPermission;
-import org.apache.hadoop.hdfs.DistributedFileSystem;
-import org.apache.hadoop.hdfs.protocol.SystemErasureCodingPolicies;
 import org.apache.hadoop.mapred.JobConf;
 import org.junit.Assert;
 import org.junit.Test;
-import org.mockito.verification.VerificationMode;
 
 /**
  * A class for unit testing JobResourceUploader.
@@ -365,40 +357,6 @@ public class TestJobResourceUploader {
         expectedArchivesWithFrags, expectedJobJar);
   }
 
-  @Test
-  public void testErasureCodingDefault() throws IOException {
-    testErasureCodingSetting(true);
-  }
-
-  @Test
-  public void testErasureCodingDisabled() throws IOException {
-    testErasureCodingSetting(false);
-  }
-
-  private void testErasureCodingSetting(boolean defaultBehavior)
-      throws IOException {
-    JobConf jConf = new JobConf();
-    // don't set to false if EC remains disabled to check default setting
-    if (!defaultBehavior) {
-      jConf.setBoolean(MRJobConfig.MR_AM_STAGING_DIR_ERASURECODING_ENABLED,
-          true);
-    }
-
-    DistributedFileSystem fs = mock(DistributedFileSystem.class);
-    Path path = new Path("/");
-    when(fs.makeQualified(any(Path.class))).thenReturn(path);
-    JobResourceUploader uploader = new StubedUploader(fs, true);
-    Job job = Job.getInstance(jConf);
-
-    uploader.uploadResources(job, new Path("/test"));
-
-    String replicationPolicyName = SystemErasureCodingPolicies
-        .getReplicationPolicy().getName();
-    VerificationMode mode = defaultBehavior ? times(1) : never();
-    verify(fs, mode).setErasureCodingPolicy(eq(path),
-        eq(replicationPolicyName));
-  }
-
   private void runTmpResourcePathTest(JobResourceUploader uploader,
       ResourceConf rConf, JobConf jConf, String[] expectedFiles,
       String[] expectedArchives, String expectedJobJar) throws IOException {
@@ -740,10 +698,6 @@ public class TestJobResourceUploader {
       super(FileSystem.getLocal(conf), useWildcard);
     }
 
-    StubedUploader(FileSystem fs, boolean useWildcard) throws IOException {
-      super(fs, useWildcard);
-    }
-
     @Override
     FileStatus getFileStatus(Map<URI, FileStatus> statCache, Configuration job,
         Path p) throws IOException {