HDFS-9139. Enable parallel JUnit tests for HDFS Pre-commit (Contributed by Chris Nauroth and Vinayakumar B)

(cherry picked from commit 39581e3be2aaeb1eeb7fb98b6bdecd8d4e3c7269)

 Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestEditLogTailer.java
	hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestSeveralNameNodes.java

dev-support/test-patch.sh

@@ -2255,16 +2255,8 @@ function check_unittests
 
     test_logfile=${PATCH_DIR}/testrun_${module_suffix}.txt
     echo "  Running tests in ${module_suffix}"
-    # Temporary hack to run the parallel tests profile only for hadoop-common.
-    # This code will be removed once hadoop-hdfs is ready for parallel test
-    # execution.
-    if [[ ${module} == "hadoop-common-project/hadoop-common" ]] ; then
-      OPTIONAL_PARALLEL_TESTS_PROFILE=${PARALLEL_TESTS_PROFILE}
-    else
-      unset OPTIONAL_PARALLEL_TESTS_PROFILE
-    fi
     # shellcheck disable=2086
-    echo_and_redirect "${test_logfile}" "${MVN}" "${MAVEN_ARGS[@]}" clean install -fae ${NATIVE_PROFILE} ${REQUIRE_TEST_LIB_HADOOP} ${OPTIONAL_PARALLEL_TESTS_PROFILE} ${TESTS_THREAD_COUNT} -D${PROJECT_NAME}PatchProcess
+    echo_and_redirect "${test_logfile}" "${MVN}" "${MAVEN_ARGS[@]}" clean install -fae ${NATIVE_PROFILE} ${REQUIRE_TEST_LIB_HADOOP} ${PARALLEL_TESTS_PROFILE} ${TESTS_THREAD_COUNT} -D${PROJECT_NAME}PatchProcess
     test_build_result=$?
 
     add_jira_footer "${module_suffix} test log" "@@BASE@@/testrun_${module_suffix}.txt"

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -714,6 +714,9 @@ Release 2.8.0 - UNRELEASED
     DataTransferProtocol sockets and allow configuring auto-tuning (He Tianyi
     via Colin P. McCabe)
 
+    HDFS-9139. Enable parallel JUnit tests for HDFS Pre-commit
+    (Chris Nauroth and Vinayakumar B via vinayakumarb)
+
   BUG FIXES
 
     HDFS-8091: ACLStatus and XAttributes should be presented to

hadoop-hdfs-project/hadoop-hdfs/pom.xml

@@ -424,14 +424,23 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
             <artifactId>maven-antrun-plugin</artifactId>
             <executions>
               <execution>
-                <id>create-parallel-tests-dirs</id>               
+                <id>create-parallel-tests-dirs</id>
                 <phase>test-compile</phase>
                 <configuration>
                   <target>
-                    <exec executable="${shell-executable}">
-                      <arg value="-c"/>
-                      <arg value="for i in {1..${testsThreadCount}}; do mkdir -p ${test.build.data}/$i; mkdir -p ${hadoop.tmp.dir}/$i; done"/>
-                    </exec>
+                    <script language="javascript"><![CDATA[
+                      var baseDirs = [
+                          "${test.build.data}",
+                          "${test.build.dir}",
+                          "${hadoop.tmp.dir}" ];
+                      for (var i in baseDirs) {
+                        for (var j = 1; j <= ${testsThreadCount}; ++j) {
+                          var mkdir = project.createTask("mkdir");
+                          mkdir.setDir(new java.io.File(baseDirs[i], j));
+                          mkdir.perform();
+                        }
+                      }
+                    ]]></script>
                   </target>
                 </configuration>
                 <goals>
@@ -445,10 +454,24 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
             <artifactId>maven-surefire-plugin</artifactId>
             <configuration>
               <forkCount>${testsThreadCount}</forkCount>
-              <argLine>-Xmx1024m -XX:+HeapDumpOnOutOfMemoryError -DminiClusterDedicatedDirs=true</argLine>
+              <reuseForks>false</reuseForks>
+              <argLine>${maven-surefire-plugin.argLine} -DminiClusterDedicatedDirs=true</argLine>
               <systemPropertyVariables>
                 <test.build.data>${test.build.data}/${surefire.forkNumber}</test.build.data>
+                <test.build.dir>${test.build.dir}/${surefire.forkNumber}</test.build.dir>
                 <hadoop.tmp.dir>${hadoop.tmp.dir}/${surefire.forkNumber}</hadoop.tmp.dir>
+
+                <!-- This is intentionally the same directory for all JUnit -->
+                <!-- forks, for use in the very rare situation that -->
+                <!-- concurrent tests need to coordinate, such as using lock -->
+                <!-- files. -->
+                <test.build.shared.data>${test.build.data}</test.build.shared.data>
+
+                <!-- Due to a Maven quirk, setting this to just -->
+                <!-- surefire.forkNumber won't do the parameter substitution. -->
+                <!-- Putting a prefix in front of it like "fork-" makes it -->
+                <!-- work. -->
+                <test.unique.fork.id>fork-${surefire.forkNumber}</test.unique.fork.id>
               </systemPropertyVariables>
             </configuration>
           </plugin>

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/TestSWebHdfsFileContextMainOperations.java

@@ -57,8 +57,6 @@ public class TestSWebHdfsFileContextMainOperations
   protected static final byte[] data = getFileData(numBlocks,
       getDefaultBlockSize());
 
-  private static Configuration sslConf;
-
   @BeforeClass
   public static void clusterSetupAtBeginning()
       throws IOException, LoginException, URISyntaxException {
@@ -67,15 +65,18 @@ public class TestSWebHdfsFileContextMainOperations
     FileUtil.fullyDelete(base);
     base.mkdirs();
     keystoresDir = new File(BASEDIR).getAbsolutePath();
-    sslConf = new Configuration();
-
     try {
       sslConfDir = KeyStoreTestUtil
           .getClasspathDir(TestSWebHdfsFileContextMainOperations.class);
-      KeyStoreTestUtil.setupSSLConfig(keystoresDir, sslConfDir, sslConf, false);
+      KeyStoreTestUtil.setupSSLConfig(keystoresDir, sslConfDir, CONF, false);
+      CONF.set(DFSConfigKeys.DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY,
+          KeyStoreTestUtil.getClientSSLConfigFileName());
+      CONF.set(DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY,
+          KeyStoreTestUtil.getServerSSLConfigFileName());
     } catch (Exception ex) {
       throw new RuntimeException(ex);
     }
+
     CONF.set(DFSConfigKeys.DFS_HTTP_POLICY_KEY, "HTTPS_ONLY");
     CONF.set(DFSConfigKeys.DFS_NAMENODE_HTTPS_ADDRESS_KEY, "localhost:0");
     CONF.set(DFSConfigKeys.DFS_DATANODE_HTTPS_ADDRESS_KEY, "localhost:0");

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/datatransfer/sasl/SaslDataTransferTestCase.java

@@ -20,6 +20,7 @@ package org.apache.hadoop.hdfs.protocol.datatransfer.sasl;
 import static org.apache.hadoop.fs.CommonConfigurationKeys.IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SASL_KEY;
 import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_DATA_TRANSFER_PROTECTION_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_ACCESS_TOKEN_ENABLE_KEY;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_HTTPS_ADDRESS_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_KERBEROS_PRINCIPAL_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_KEYTAB_FILE_KEY;
@@ -27,6 +28,7 @@ import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_HTTP_POLICY_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HTTPS_ADDRESS_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_KERBEROS_PRINCIPAL_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_KEYTAB_FILE_KEY;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_WEB_AUTHENTICATION_KERBEROS_PRINCIPAL_KEY;
 import static org.junit.Assert.*;
 
@@ -129,6 +131,10 @@ public abstract class SaslDataTransferTestCase {
     String keystoresDir = baseDir.getAbsolutePath();
     String sslConfDir = KeyStoreTestUtil.getClasspathDir(this.getClass());
     KeyStoreTestUtil.setupSSLConfig(keystoresDir, sslConfDir, conf, false);
+    conf.set(DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getClientSSLConfigFileName());
+    conf.set(DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getServerSSLConfigFileName());
     return conf;
   }
 }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/qjournal/TestSecureNNWithQJM.java

@@ -22,6 +22,7 @@ import static org.junit.Assert.*;
 import static org.apache.hadoop.fs.CommonConfigurationKeys.IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SASL_KEY;
 import static org.apache.hadoop.hdfs.client.HdfsClientConfigKeys.DFS_DATA_TRANSFER_PROTECTION_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_BLOCK_ACCESS_TOKEN_ENABLE_KEY;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_HTTPS_ADDRESS_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_KERBEROS_PRINCIPAL_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_KEYTAB_FILE_KEY;
@@ -35,6 +36,7 @@ import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_HTTPS_ADDRESS_KE
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_KERBEROS_PRINCIPAL_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_KEYTAB_FILE_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_NAMENODE_SECONDARY_HTTP_ADDRESS_KEY;
+import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY;
 import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_WEB_AUTHENTICATION_KERBEROS_PRINCIPAL_KEY;
 
 import java.io.File;
@@ -128,6 +130,10 @@ public class TestSecureNNWithQJM {
     String sslConfDir = KeyStoreTestUtil.getClasspathDir(
       TestSecureNNWithQJM.class);
     KeyStoreTestUtil.setupSSLConfig(keystoresDir, sslConfDir, baseConf, false);
+    baseConf.set(DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getClientSSLConfigFileName());
+    baseConf.set(DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getServerSSLConfigFileName());
   }
 
   @AfterClass

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestBlockScanner.java

@@ -612,14 +612,8 @@ public class TestBlockScanner {
 
     // We scan 5 bytes per file (1 byte in file, 4 bytes of checksum)
     final int BYTES_SCANNED_PER_FILE = 5;
-    final int NUM_FILES[] = new int[] { 1, 5, 10 };
-    int TOTAL_FILES = 0;
-    for (int i = 0; i < NUM_FILES.length; i++) {
-      TOTAL_FILES += NUM_FILES[i];
-    }
-    ctx.createFiles(0, NUM_FILES[0], 1);
-    ctx.createFiles(0, NUM_FILES[1], 1);
-    ctx.createFiles(0, NUM_FILES[2], 1);
+    int TOTAL_FILES = 16;
+    ctx.createFiles(0, TOTAL_FILES, 1);
 
     // start scanning
     final TestScanResultHandler.Info info =

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestDataNodeMetrics.java

@@ -277,13 +277,14 @@ public class TestDataNodeMetrics {
       }
 
       for (int x =0; x < 50; x++) {
-        String s = DFSTestUtil.readFile(fs, new Path("/time.txt." + x));
+        DFSTestUtil.readFile(fs, new Path("/time.txt." + x));
       }
 
       MetricsRecordBuilder rbNew = getMetrics(datanode.getMetrics().name());
       long endWriteValue = getLongCounter("TotalWriteTime", rbNew);
       long endReadValue = getLongCounter("TotalReadTime", rbNew);
-
+      // Lets Metric system update latest metrics
+      Thread.sleep(100);
       assertTrue(endReadValue > startReadValue);
       assertTrue(endWriteValue > startWriteValue);
     } finally {

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFSNamesystem.java

@@ -263,6 +263,7 @@ public class TestFSNamesystem {
     }
 
     latch.await();
+    Thread.sleep(10); // Lets all threads get BLOCKED
     Assert.assertEquals("Expected number of blocked thread not found",
                         threadCount, rwLock.getQueueLength());
   }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNameNodeHttpServer.java

@@ -74,6 +74,10 @@ public class TestNameNodeHttpServer {
     KeyStoreTestUtil.setupSSLConfig(keystoresDir, sslConfDir, conf, false);
     connectionFactory = URLConnectionFactory
         .newDefaultURLConnectionFactory(conf);
+    conf.set(DFSConfigKeys.DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getClientSSLConfigFileName());
+    conf.set(DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getServerSSLConfigFileName());
   }
 
   @AfterClass

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNameNodeRespectsBindHostKeys.java

@@ -223,6 +223,10 @@ public class TestNameNodeRespectsBindHostKeys {
     LOG.info("Testing behavior without " + DFS_NAMENODE_HTTPS_BIND_HOST_KEY);
 
     setupSsl();
+    conf.set(DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getClientSSLConfigFileName());
+    conf.set(DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getServerSSLConfigFileName());
 
     conf.set(DFS_HTTP_POLICY_KEY, HttpConfig.Policy.HTTPS_ONLY.name());
 

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestEditLogTailer.java

@@ -36,6 +36,7 @@ import org.apache.hadoop.hdfs.server.namenode.FSImage;
 import org.apache.hadoop.hdfs.server.namenode.NNStorage;
 import org.apache.hadoop.hdfs.server.namenode.NameNode;
 import org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter;
+import org.apache.hadoop.net.ServerSocketUtil;
 import org.apache.hadoop.test.GenericTestUtils;
 import org.apache.log4j.Level;
 import org.junit.Test;
@@ -122,9 +123,11 @@ public class TestEditLogTailer {
     
     // Have to specify IPC ports so the NNs can talk to each other.
     MiniDFSNNTopology topology = new MiniDFSNNTopology()
-      .addNameservice(new MiniDFSNNTopology.NSConf("ns1")
-        .addNN(new MiniDFSNNTopology.NNConf("nn1").setIpcPort(10031))
-        .addNN(new MiniDFSNNTopology.NNConf("nn2").setIpcPort(10032)));
+        .addNameservice(new MiniDFSNNTopology.NSConf("ns1")
+            .addNN(new MiniDFSNNTopology.NNConf("nn1")
+                .setIpcPort(ServerSocketUtil.getPort(0, 100)))
+            .addNN(new MiniDFSNNTopology.NNConf("nn2")
+                .setIpcPort(ServerSocketUtil.getPort(0, 100))));
 
     MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
       .nnTopology(topology)
@@ -146,13 +149,17 @@ public class TestEditLogTailer {
       long startTxId) throws Exception {
     URI sharedUri = cluster.getSharedEditsDir(0, 1);
     File sharedDir = new File(sharedUri.getPath(), "current");
-    final File expectedLog = new File(sharedDir,
-        NNStorage.getInProgressEditsFileName(startTxId));
-    
+    final File expectedInProgressLog =
+        new File(sharedDir, NNStorage.getInProgressEditsFileName(startTxId));
+    final File expectedFinalizedLog = new File(sharedDir,
+        NNStorage.getFinalizedEditsFileName(startTxId, startTxId + 1));
+    // There is a chance that multiple rolling happens by multiple NameNodes
+    // And expected inprogress file would have also finalized. So look for the
+    // finalized edits file as well
     GenericTestUtils.waitFor(new Supplier<Boolean>() {
       @Override
       public Boolean get() {
-        return expectedLog.exists();
+        return expectedInProgressLog.exists() || expectedFinalizedLog.exists();
       }
     }, 100, 10000);
   }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestHAAppend.java

@@ -123,7 +123,7 @@ public class TestHAAppend {
 
       if (!isTruncateReady) {
         TestFileTruncate.checkBlockRecovery(fileToTruncate,
-            cluster.getFileSystem(1));
+            cluster.getFileSystem(1), 300, 200);
       }
       AppendTestUtil.checkFullFile(fs, fileToTruncate, truncatePos[0], data,
           fileToTruncate.toString());

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestHttpsFileSystem.java

@@ -65,6 +65,10 @@ public class TestHttpsFileSystem {
     sslConfDir = KeyStoreTestUtil.getClasspathDir(TestHttpsFileSystem.class);
 
     KeyStoreTestUtil.setupSSLConfig(keystoresDir, sslConfDir, conf, false);
+    conf.set(DFSConfigKeys.DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getClientSSLConfigFileName());
+    conf.set(DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY,
+        KeyStoreTestUtil.getServerSSLConfigFileName());
 
     cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
     cluster.waitActive();

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHdfsTokens.java

@@ -216,7 +216,11 @@ public class TestWebHdfsTokens {
       keystoresDir = new File(BASEDIR).getAbsolutePath();
       sslConfDir = KeyStoreTestUtil.getClasspathDir(TestWebHdfsTokens.class);
       KeyStoreTestUtil.setupSSLConfig(keystoresDir, sslConfDir, clusterConf, false);
-	  
+      clusterConf.set(DFSConfigKeys.DFS_CLIENT_HTTPS_KEYSTORE_RESOURCE_KEY,
+          KeyStoreTestUtil.getClientSSLConfigFileName());
+      clusterConf.set(DFSConfigKeys.DFS_SERVER_HTTPS_KEYSTORE_RESOURCE_KEY,
+          KeyStoreTestUtil.getServerSSLConfigFileName());
+
       // trick the NN into thinking security is enabled w/o it trying
       // to login from a keytab
       UserGroupInformation.setConfiguration(clusterConf);

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/oauth2/TestClientCredentialTimeBasedTokenRefresher.java

@@ -19,6 +19,7 @@
 package org.apache.hadoop.hdfs.web.oauth2;
 
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.net.ServerSocketUtil;
 import org.apache.hadoop.util.Timer;
 import org.apache.http.HttpStatus;
 import org.codehaus.jackson.map.ObjectMapper;
@@ -74,7 +75,7 @@ public class TestClientCredentialTimeBasedTokenRefresher {
 
   @Test
   public void refreshUrlIsCorrect() throws IOException {
-    final int PORT = 7552;
+    final int PORT = ServerSocketUtil.getPort(0, 20);
     final String REFRESH_ADDRESS = "http://localhost:" + PORT + "/refresh";
 
     long tokenExpires = 0;