Merge pull request tronprotocol#6095 from halibobo1205/477/backup_thead_pool_close_opt

feat(backup): make nodes with backup shutdown gracefully by kill -15

Author: CodeNinjaEvan

framework/src/main/java/org/tron/common/backup/socket/BackupServer.java

@@ -95,7 +95,6 @@ public void initChannel(NioDatagramChannel ch)
   public void close() {
     logger.info("Closing backup server...");
     shutdown = true;
-    ExecutorServiceManager.shutdownAndAwaitTermination(executor, name);
     backupManager.stop();
     if (channel != null) {
       try {
@@ -104,6 +103,7 @@ public void close() {
         logger.warn("Closing backup server failed.", e);
       }
     }
+    ExecutorServiceManager.shutdownAndAwaitTermination(executor, name);
     logger.info("Backup server closed.");
   }
 }

framework/src/test/java/org/tron/common/backup/BackupServerTest.java

@@ -7,6 +7,7 @@
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
+import org.junit.rules.Timeout;
 import org.tron.common.backup.socket.BackupServer;
 import org.tron.common.parameter.CommonParameter;
 import org.tron.core.Constant;
@@ -17,6 +18,9 @@ public class BackupServerTest {
 
   @Rule
   public TemporaryFolder temporaryFolder = new TemporaryFolder();
+
+  @Rule
+  public Timeout globalTimeout = Timeout.seconds(60);
   private BackupServer backupServer;
 
   @Before
@@ -40,5 +44,7 @@ public void tearDown() {
   @Test
   public void test() throws InterruptedException {
     backupServer.initServer();
+    // wait for the server to start
+    Thread.sleep(1000);
   }
 }