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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2022/05/30 05:22:12 UTC

[GitHub] [hadoop] slfan1989 opened a new pull request, #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

slfan1989 opened a new pull request, #4375:
URL: https://github.com/apache/hadoop/pull/4375

   JIRA:HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.


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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1147618712

   @goiri Please help me review the code again, thank you very much!


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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1184064202

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1169414219

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1161052251

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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   This message was automatically generated.
   
   


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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1192038685

   @goiri Can you help merge this pr into the trunk branch? Later, other partners will continue this optimization in the hadoop-hdfs module, thank you very much!


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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1140818949

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1186061139

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1191073055

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1141182847

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1149281613

   @ayushtkn Please help me review the code.


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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1192038471

   @goiri Can you help merge this pr into the trunk branch? Later, other partners will continue this optimization in the hadoop-hdfs module, thank you very much!


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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1179468676

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] slfan1989 commented on a diff in pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on code in PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#discussion_r922543695


##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/PeriodicService.java:
##########
@@ -167,21 +167,18 @@ protected synchronized void startPeriodic() {
     stopPeriodic();
 
     // Create the runnable service
-    Runnable updateRunnable = new Runnable() {
-      @Override
-      public void run() {
-        LOG.debug("Running {} update task", serviceName);
-        try {
-          if (!isRunning) {
-            return;
-          }
-          periodicInvoke();
-          runCount++;
-          lastRun = Time.now();
-        } catch (Exception ex) {
-          errorCount++;
-          LOG.warn(serviceName + " service threw an exception", ex);
+    Runnable updateRunnable = () -> {
+      LOG.debug("Running {} update task", serviceName);
+      try {
+        if (!isRunning) {
+          return;
         }
+        periodicInvoke();
+        runCount++;
+        lastRun = Time.now();
+      } catch (Exception ex) {
+        errorCount++;
+        LOG.warn(serviceName + " service threw an exception", ex);

Review Comment:
   Thanks for your help reviewing the code, I will fix it.



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[GitHub] [hadoop] goiri commented on a diff in pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
goiri commented on code in PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#discussion_r885918464


##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/resolver/order/TestLocalResolver.java:
##########
@@ -78,12 +77,8 @@ public void testLocalResolver() throws IOException {
     StringBuilder sb = new StringBuilder("clientX");
     LocalResolver localResolver = new LocalResolver(conf, router);
     LocalResolver spyLocalResolver = spy(localResolver);
-    doAnswer(new Answer<String>() {
-      @Override
-      public String answer(InvocationOnMock invocation) throws Throwable {
-        return sb.toString();
-      }
-    }).when(spyLocalResolver).getClientAddr();
+    doAnswer((Answer<String>) invocation ->

Review Comment:
   The line split is a little weird. Maybe better as:
   ```
   doAnswer((Answer<String>) invocation -> sb.toString()
   ).when(spyLocalResolver).getClientAddr();
   ```



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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1155831255

   @ayushtkn @goiri Please help me to review the code, thank you very much! 


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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1157862822

   @goiri Can you help me merge this pr to trunk branch? Thanks for helping me review the code!


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[GitHub] [hadoop] slfan1989 commented on a diff in pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on code in PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#discussion_r922577518


##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterClientRejectOverload.java:
##########
@@ -206,33 +206,30 @@ private void testOverloaded(int expOverloadMin, int expOverloadMax,
     for (int i = 0; i < numOps; i++) {
       // Stagger the operations a little (50ms)
       final int sleepTime = i * 50;
-      Future<?> future = exec.submit(new Runnable() {
-        @Override
-        public void run() {
-          DFSClient routerClient = null;
-          try {
-            Thread.sleep(sleepTime);
-            routerClient = new DFSClient(address, conf);
-            String clientName = routerClient.getClientName();
-            ClientProtocol routerProto = routerClient.getNamenode();
-            routerProto.renewLease(clientName, null);
-          } catch (RemoteException re) {
-            IOException ioe = re.unwrapRemoteException();
-            assertTrue("Wrong exception: " + ioe,
-                ioe instanceof StandbyException);
-            assertExceptionContains("is overloaded", ioe);
-            overloadException.incrementAndGet();
-          } catch (IOException e) {
-            fail("Unexpected exception: " + e);
-          } catch (InterruptedException e) {
-            fail("Cannot sleep: " + e);
-          } finally {
-            if (routerClient != null) {
-              try {
-                routerClient.close();
-              } catch (IOException e) {
-                LOG.error("Cannot close the client");
-              }
+      Future<?> future = exec.submit(() -> {
+        DFSClient routerClient = null;
+        try {
+          Thread.sleep(sleepTime);
+          routerClient = new DFSClient(address, conf);
+          String clientName = routerClient.getClientName();
+          ClientProtocol routerProto = routerClient.getNamenode();
+          routerProto.renewLease(clientName, null);
+        } catch (RemoteException re) {
+          IOException ioe = re.unwrapRemoteException();
+          assertTrue("Wrong exception: " + ioe,

Review Comment:
   I will fix it.



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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1190444082

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] slfan1989 commented on a diff in pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on code in PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#discussion_r886177581


##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/resolver/order/TestLocalResolver.java:
##########
@@ -78,12 +77,8 @@ public void testLocalResolver() throws IOException {
     StringBuilder sb = new StringBuilder("clientX");
     LocalResolver localResolver = new LocalResolver(conf, router);
     LocalResolver spyLocalResolver = spy(localResolver);
-    doAnswer(new Answer<String>() {
-      @Override
-      public String answer(InvocationOnMock invocation) throws Throwable {
-        return sb.toString();
-      }
-    }).when(spyLocalResolver).getClientAddr();
+    doAnswer((Answer<String>) invocation ->

Review Comment:
   Thanks for your help reviewing the code, I will fix it.



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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1141025492

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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1151312523

   @goiri Please help me review the code again.


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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1152481716

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] goiri merged pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
goiri merged PR #4375:
URL: https://github.com/apache/hadoop/pull/4375


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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1184923998

   @goiri Can you help to merge this pr into trunk branch? thank you very much! 


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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1162046081

   @goiri Can you help me merge this pr to trunk branch? Thanks for helping me review the code!


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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1143021805

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1152506400

   @goiri Please help me review the code again, thank you very much! Can you help merge to trunk branch?


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[GitHub] [hadoop] slfan1989 commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1179489736

   @goiri @ayushtkn Can you help to merge this pr into trunk branch? thank you very much!


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[GitHub] [hadoop] slfan1989 commented on a diff in pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
slfan1989 commented on code in PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#discussion_r922577351


##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterFaultTolerant.java:
##########
@@ -168,7 +169,7 @@ public void cleanup() throws Exception {
     }
     namenodes.clear();
 
-    routers.forEach(router ->  router.stop());
+    routers.forEach(AbstractService::stop);

Review Comment:
    I will fix it.



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[GitHub] [hadoop] hadoop-yetus commented on pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#issuecomment-1184641712

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
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   |||| _ Prechecks _ |
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   | +0 :ok: |  detsecrets  |   0m  0s |  |  detect-secrets was not available.  |
   | +1 :green_heart: |  @author  |   0m  0s |  |  The patch does not contain any @author tags.  |
   | +1 :green_heart: |  test4tests  |   0m  0s |  |  The patch appears to include 10 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |  40m  0s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |   0m 54s |  |  trunk passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1  |
   | +1 :green_heart: |  compile  |   0m 48s |  |  trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
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   | +1 :green_heart: |  mvnsite  |   0m 53s |  |  trunk passed  |
   | +1 :green_heart: |  javadoc  |   0m 58s |  |  trunk passed with JDK Private Build-11.0.15+10-Ubuntu-0ubuntu0.20.04.1  |
   | +1 :green_heart: |  javadoc  |   1m  7s |  |  trunk passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
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   | +1 :green_heart: |  shadedclient  |  24m  8s |  |  branch has no errors when building and testing our client artifacts.  |
   | -0 :warning: |  patch  |  24m 31s |  |  Used diff version of patch file. Binary files and potentially other changes not applied. Please rebase and squash commits if necessary.  |
   |||| _ Patch Compile Tests _ |
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   | +1 :green_heart: |  javadoc  |   0m 54s |  |  the patch passed with JDK Private Build-1.8.0_312-8u312-b07-0ubuntu1~20.04-b07  |
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   | +1 :green_heart: |  shadedclient  |  23m 17s |  |  patch has no errors when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  |  39m 41s |  |  hadoop-hdfs-rbf in the patch passed.  |
   | +1 :green_heart: |  asflicense  |   0m 44s |  |  The patch does not generate ASF License warnings.  |
   |  |   | 143m 22s |  |  |
   
   
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   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4375/10/artifact/out/Dockerfile |
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   | Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
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   | Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
   
   
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[GitHub] [hadoop] goiri commented on a diff in pull request #4375: HDFS-16605. Improve Code With Lambda in hadoop-hdfs-rbf moudle.

Posted by GitBox <gi...@apache.org>.
goiri commented on code in PR #4375:
URL: https://github.com/apache/hadoop/pull/4375#discussion_r921680900


##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/PeriodicService.java:
##########
@@ -167,21 +167,18 @@ protected synchronized void startPeriodic() {
     stopPeriodic();
 
     // Create the runnable service
-    Runnable updateRunnable = new Runnable() {
-      @Override
-      public void run() {
-        LOG.debug("Running {} update task", serviceName);
-        try {
-          if (!isRunning) {
-            return;
-          }
-          periodicInvoke();
-          runCount++;
-          lastRun = Time.now();
-        } catch (Exception ex) {
-          errorCount++;
-          LOG.warn(serviceName + " service threw an exception", ex);
+    Runnable updateRunnable = () -> {
+      LOG.debug("Running {} update task", serviceName);
+      try {
+        if (!isRunning) {
+          return;
         }
+        periodicInvoke();
+        runCount++;
+        lastRun = Time.now();
+      } catch (Exception ex) {
+        errorCount++;
+        LOG.warn(serviceName + " service threw an exception", ex);

Review Comment:
   Use {}



##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterClientRejectOverload.java:
##########
@@ -206,33 +206,30 @@ private void testOverloaded(int expOverloadMin, int expOverloadMax,
     for (int i = 0; i < numOps; i++) {
       // Stagger the operations a little (50ms)
       final int sleepTime = i * 50;
-      Future<?> future = exec.submit(new Runnable() {
-        @Override
-        public void run() {
-          DFSClient routerClient = null;
-          try {
-            Thread.sleep(sleepTime);
-            routerClient = new DFSClient(address, conf);
-            String clientName = routerClient.getClientName();
-            ClientProtocol routerProto = routerClient.getNamenode();
-            routerProto.renewLease(clientName, null);
-          } catch (RemoteException re) {
-            IOException ioe = re.unwrapRemoteException();
-            assertTrue("Wrong exception: " + ioe,
-                ioe instanceof StandbyException);
-            assertExceptionContains("is overloaded", ioe);
-            overloadException.incrementAndGet();
-          } catch (IOException e) {
-            fail("Unexpected exception: " + e);
-          } catch (InterruptedException e) {
-            fail("Cannot sleep: " + e);
-          } finally {
-            if (routerClient != null) {
-              try {
-                routerClient.close();
-              } catch (IOException e) {
-                LOG.error("Cannot close the client");
-              }
+      Future<?> future = exec.submit(() -> {
+        DFSClient routerClient = null;
+        try {
+          Thread.sleep(sleepTime);
+          routerClient = new DFSClient(address, conf);
+          String clientName = routerClient.getClientName();
+          ClientProtocol routerProto = routerClient.getNamenode();
+          routerProto.renewLease(clientName, null);
+        } catch (RemoteException re) {
+          IOException ioe = re.unwrapRemoteException();
+          assertTrue("Wrong exception: " + ioe,

Review Comment:
   Single line



##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/router/TestRouterFaultTolerant.java:
##########
@@ -168,7 +169,7 @@ public void cleanup() throws Exception {
     }
     namenodes.clear();
 
-    routers.forEach(router ->  router.stop());
+    routers.forEach(AbstractService::stop);

Review Comment:
   Can we do `Router::stop`?



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