HDDS-8715. Hadoop RPC server creation renames current thread

hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/HddsUtils.java

@@ -32,6 +32,7 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.OptionalInt;
 import java.util.TreeMap;
@@ -82,6 +83,7 @@
 
 import org.apache.hadoop.security.AccessControlException;
 import org.apache.hadoop.security.token.SecretManager;
+import org.apache.hadoop.util.CheckedSupplier;
 import org.apache.ratis.thirdparty.com.google.protobuf.ByteString;
 import org.apache.ratis.util.SizeInBytes;
 import org.apache.hadoop.ozone.conf.OzoneServiceConfig;
@@ -824,4 +826,23 @@ public static Map<String, String> processForLogging(OzoneConfiguration conf) {
     }
     return sortedOzoneProps;
   }
+
+  /**
+   * Execute some code and ensure thread name is not changed
+   * (workaround for HADOOP-18433).
+   */
+  public static <T, E extends IOException> T preserveThreadName(
+      CheckedSupplier<T, E> supplier) throws E {
+    final Thread thread = Thread.currentThread();
+    final String threadName = thread.getName();
+
+    try {
+      return supplier.get();
+    } finally {
+      if (!Objects.equals(threadName, thread.getName())) {
+        LOG.info("Restoring thread name: {}", threadName);
+        thread.setName(threadName);
+      }
+    }
+  }
 }

hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/HddsDatanodeClientProtocolServer.java

@@ -48,6 +48,7 @@
 import static org.apache.hadoop.hdds.HddsConfigKeys.HDDS_DATANODE_CLIENT_ADDRESS_KEY;
 import static org.apache.hadoop.hdds.HddsConfigKeys.HDDS_DATANODE_HANDLER_COUNT_DEFAULT;
 import static org.apache.hadoop.hdds.HddsConfigKeys.HDDS_DATANODE_HANDLER_COUNT_KEY;
+import static org.apache.hadoop.hdds.HddsUtils.preserveThreadName;
 import static org.apache.hadoop.hdds.protocol.DatanodeDetails.Port.Name.CLIENT_RPC;
 
 /**
@@ -162,8 +163,8 @@ private RPC.Server getRpcServer(OzoneConfiguration configuration)
         .ReconfigureProtocolService.newReflectiveBlockingService(
             reconfigureServerProtocol);
 
-    return startRpcServer(configuration, rpcAddress,
-        ReconfigureProtocolPB.class, reconfigureService, handlerCount);
+    return preserveThreadName(() -> startRpcServer(configuration, rpcAddress,
+        ReconfigureProtocolPB.class, reconfigureService, handlerCount));
   }
 
   /**

hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/StorageContainerManager.java

@@ -187,6 +187,7 @@
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 
+import static org.apache.hadoop.hdds.HddsUtils.preserveThreadName;
 import static org.apache.hadoop.hdds.scm.ScmConfigKeys.OZONE_SCM_EVENT_REPORT_EXEC_WAIT_THRESHOLD_DEFAULT;
 import static org.apache.hadoop.hdds.scm.ScmConfigKeys.OZONE_SCM_EVENT_REPORT_QUEUE_WAIT_THRESHOLD_DEFAULT;
 import static org.apache.hadoop.hdds.security.x509.certificate.authority.CertificateStore.CertType.VALID_CERTS;
@@ -1078,16 +1079,16 @@ public static RPC.Server startRpcServer(
       BlockingService instance,
       int handlerCount)
       throws IOException {
-    RPC.Server rpcServer =
-        new RPC.Builder(conf)
-            .setProtocol(protocol)
-            .setInstance(instance)
-            .setBindAddress(addr.getHostString())
-            .setPort(addr.getPort())
-            .setNumHandlers(handlerCount)
-            .setVerbose(false)
-            .setSecretManager(null)
-            .build();
+
+    RPC.Server rpcServer = preserveThreadName(() -> new RPC.Builder(conf)
+        .setProtocol(protocol)
+        .setInstance(instance)
+        .setBindAddress(addr.getHostString())
+        .setPort(addr.getPort())
+        .setNumHandlers(handlerCount)
+        .setVerbose(false)
+        .setSecretManager(null)
+        .build());
 
     HddsServerUtil.addPBProtocol(conf, protocol, instance, rpcServer);
     return rpcServer;

hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OzoneManager.java

@@ -230,6 +230,7 @@
 import static org.apache.hadoop.hdds.HddsConfigKeys.HDDS_BLOCK_TOKEN_ENABLED;
 import static org.apache.hadoop.hdds.HddsConfigKeys.HDDS_BLOCK_TOKEN_ENABLED_DEFAULT;
 import static org.apache.hadoop.hdds.HddsUtils.getScmAddressForClients;
+import static org.apache.hadoop.hdds.HddsUtils.preserveThreadName;
 import static org.apache.hadoop.hdds.server.ServerUtils.updateRPCListenAddress;
 import static org.apache.hadoop.hdds.utils.HAUtils.getScmInfo;
 import static org.apache.hadoop.ozone.OmUtils.MAX_TRXN_ID;
@@ -1262,15 +1263,16 @@ private RPC.Server startRpcServer(OzoneConfiguration conf,
       BlockingService reconfigureProtocolService,
       int handlerCount)
       throws IOException {
-    RPC.Server rpcServer = new RPC.Builder(conf)
+
+    RPC.Server rpcServer = preserveThreadName(() -> new RPC.Builder(conf)
         .setProtocol(OzoneManagerProtocolPB.class)
         .setInstance(clientProtocolService)
         .setBindAddress(addr.getHostString())
         .setPort(addr.getPort())
         .setNumHandlers(handlerCount)
         .setVerbose(false)
         .setSecretManager(delegationTokenMgr)
-        .build();
+        .build());
 
     HddsServerUtil.addPBProtocol(conf, OMInterServiceProtocolPB.class,
         interOMProtocolService, rpcServer);