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From varunsax...@apache.org
Subject [46/51] [abbrv] hadoop git commit: YARN-6134. [ATSv2 Security] Regenerate delegation token for app just before token expires if app collector is active. Contributed by Varun Saxena
Date Tue, 22 Aug 2017 13:35:21 GMT
YARN-6134. [ATSv2 Security] Regenerate delegation token for app just before token expires if
app collector is active. Contributed by Varun Saxena


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/472461ee
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/472461ee
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/472461ee

Branch: refs/heads/YARN-5355
Commit: 472461ee239c1a45bfe78e45ec5858365fb32f48
Parents: 69078ff
Author: Jian He <jianhe@apache.org>
Authored: Fri Aug 18 23:20:44 2017 -0700
Committer: Varun Saxena <varunsaxena@apache.org>
Committed: Tue Aug 22 19:03:05 2017 +0530

----------------------------------------------------------------------
 .../security/TestTimelineAuthFilterForV2.java   | 104 ++++++++++++++--
 .../collector/AppLevelTimelineCollector.java    |  35 ++++--
 .../collector/NodeTimelineCollectorManager.java | 118 ++++++++++++++-----
 ...neV2DelegationTokenSecretManagerService.java |  11 ++
 4 files changed, 222 insertions(+), 46 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hadoop/blob/472461ee/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/security/TestTimelineAuthFilterForV2.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/security/TestTimelineAuthFilterForV2.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/security/TestTimelineAuthFilterForV2.java
index f1d5185..bc1594c 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/security/TestTimelineAuthFilterForV2.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-tests/src/test/java/org/apache/hadoop/yarn/server/timelineservice/security/TestTimelineAuthFilterForV2.java
@@ -19,6 +19,7 @@
 package org.apache.hadoop.yarn.server.timelineservice.security;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
@@ -27,6 +28,7 @@ import static org.mockito.Matchers.eq;
 import static org.mockito.Mockito.atLeastOnce;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
@@ -51,6 +53,8 @@ import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authentication.KerberosTestUtils;
 import org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler;
 import org.apache.hadoop.security.ssl.KeyStoreTestUtil;
+import org.apache.hadoop.security.token.Token;
+import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSecretManager;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
 import org.apache.hadoop.yarn.api.records.timelineservice.TimelineEntity;
 import org.apache.hadoop.yarn.client.api.TimelineV2Client;
@@ -190,6 +194,10 @@ public class TestTimelineAuthFilterForV2 {
       // renewed automatically if app is still alive.
       conf.setLong(
           YarnConfiguration.TIMELINE_DELEGATION_TOKEN_RENEW_INTERVAL, 100);
+      // Set token max lifetime to 4 seconds to test if timeline delegation
+      // token for the app is regenerated automatically if app is still alive.
+      conf.setLong(
+          YarnConfiguration.TIMELINE_DELEGATION_TOKEN_MAX_LIFETIME, 4000);
     }
     UserGroupInformation.setConfiguration(conf);
     collectorManager = new DummyNodeTimelineCollectorManager();
@@ -205,9 +213,8 @@ public class TestTimelineAuthFilterForV2 {
     if (!withKerberosLogin) {
       AppLevelTimelineCollector collector =
           (AppLevelTimelineCollector)collectorManager.get(appId);
-      org.apache.hadoop.security.token.Token
-          <TimelineDelegationTokenIdentifier> token =
-              collector.getDelegationTokenForApp();
+      Token<TimelineDelegationTokenIdentifier> token =
+          collector.getDelegationTokenForApp();
       token.setService(new Text("localhost" + token.getService().toString().
           substring(token.getService().toString().indexOf(":"))));
       UserGroupInformation.getCurrentUser().addToken(token);
@@ -304,6 +311,20 @@ public class TestTimelineAuthFilterForV2 {
     }
   }
 
+  private boolean publishWithRetries(ApplicationId appId, File entityTypeDir,
+      String entityType, int numEntities) throws Exception {
+    for (int i = 0; i < 10; i++) {
+      try {
+        publishAndVerifyEntity(appId, entityTypeDir, entityType, numEntities);
+      } catch (YarnException e) {
+        Thread.sleep(50);
+        continue;
+      }
+      return true;
+    }
+    return false;
+  }
+
   @Test
   public void testPutTimelineEntities() throws Exception {
     final String entityType = "dummy_type";
@@ -325,17 +346,63 @@ public class TestTimelineAuthFilterForV2 {
           }
         });
       } else {
-        publishAndVerifyEntity(appId, entityTypeDir, entityType, 1);
+        assertTrue("Entities should have been published successfully.",
+            publishWithRetries(appId, entityTypeDir, entityType, 1));
+
+        AppLevelTimelineCollector collector =
+            (AppLevelTimelineCollector) collectorManager.get(appId);
+        Token<TimelineDelegationTokenIdentifier> token =
+            collector.getDelegationTokenForApp();
+        assertNotNull(token);
+
         // Verify if token is renewed automatically and entities can still be
         // published.
         Thread.sleep(1000);
-        publishAndVerifyEntity(appId, entityTypeDir, entityType, 2);
-        AppLevelTimelineCollector collector =
-            (AppLevelTimelineCollector) collectorManager.get(appId);
+        // Entities should publish successfully after renewal.
+        assertTrue("Entities should have been published successfully.",
+            publishWithRetries(appId, entityTypeDir, entityType, 2));
         assertNotNull(collector);
         verify(collectorManager.getTokenManagerService(), atLeastOnce()).
             renewToken(eq(collector.getDelegationTokenForApp()),
                 any(String.class));
+
+        // Wait to ensure lifetime of token expires and ensure its regenerated
+        // automatically.
+        Thread.sleep(3000);
+        for (int i = 0; i < 40; i++) {
+          if (!token.equals(collector.getDelegationTokenForApp())) {
+            break;
+          }
+          Thread.sleep(50);
+        }
+        assertNotEquals("Token should have been regenerated.", token,
+            collector.getDelegationTokenForApp());
+        Thread.sleep(1000);
+        // Try publishing with the old token in UGI. Publishing should fail due
+        // to invalid token.
+        try {
+          publishAndVerifyEntity(appId, entityTypeDir, entityType, 2);
+          fail("Exception should have been thrown due to Invalid Token.");
+        } catch (YarnException e) {
+          assertTrue("Exception thrown should have been due to Invalid Token.",
+              e.getCause().getMessage().contains("InvalidToken"));
+        }
+
+        // Update the regenerated token in UGI and retry publishing entities.
+        Token<TimelineDelegationTokenIdentifier> regeneratedToken =
+            collector.getDelegationTokenForApp();
+        regeneratedToken.setService(new Text("localhost" +
+            regeneratedToken.getService().toString().substring(
+            regeneratedToken.getService().toString().indexOf(":"))));
+        UserGroupInformation.getCurrentUser().addToken(regeneratedToken);
+        assertTrue("Entities should have been published successfully.",
+                 publishWithRetries(appId, entityTypeDir, entityType, 2));
+        // Token was generated twice, once when app collector was created and
+        // later after token lifetime expiry.
+        verify(collectorManager.getTokenManagerService(), times(2)).
+            generateToken(any(UserGroupInformation.class), any(String.class));
+        assertEquals(1, ((DummyNodeTimelineCollectorManager) collectorManager).
+            getTokenExpiredCnt());
       }
       // Wait for async entity to be published.
       for (int i = 0; i < 50; i++) {
@@ -359,14 +426,35 @@ public class TestTimelineAuthFilterForV2 {
 
   private static class DummyNodeTimelineCollectorManager extends
       NodeTimelineCollectorManager {
+    private volatile int tokenExpiredCnt = 0;
     DummyNodeTimelineCollectorManager() {
       super();
     }
 
+    private int getTokenExpiredCnt() {
+      return tokenExpiredCnt;
+    }
+
     @Override
     protected TimelineV2DelegationTokenSecretManagerService
         createTokenManagerService() {
-      return spy(new TimelineV2DelegationTokenSecretManagerService());
+      return spy(new TimelineV2DelegationTokenSecretManagerService() {
+        @Override
+        protected AbstractDelegationTokenSecretManager
+            <TimelineDelegationTokenIdentifier>
+            createTimelineDelegationTokenSecretManager(long secretKeyInterval,
+                long tokenMaxLifetime, long tokenRenewInterval,
+                long tokenRemovalScanInterval) {
+          return spy(new TimelineV2DelegationTokenSecretManager(
+              secretKeyInterval, tokenMaxLifetime, tokenRenewInterval, 2000L) {
+            @Override
+            protected void logExpireToken(
+                TimelineDelegationTokenIdentifier ident) throws IOException {
+              tokenExpiredCnt++;
+            }
+          });
+        }
+      });
     }
 
     @Override

http://git-wip-us.apache.org/repos/asf/hadoop/blob/472461ee/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/AppLevelTimelineCollector.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/AppLevelTimelineCollector.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/AppLevelTimelineCollector.java
index 8b8534e..38221fe 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/AppLevelTimelineCollector.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/AppLevelTimelineCollector.java
@@ -51,7 +51,9 @@ public class AppLevelTimelineCollector extends TimelineCollector {
   private final TimelineCollectorContext context;
   private UserGroupInformation currentUser;
   private Token<TimelineDelegationTokenIdentifier> delegationTokenForApp;
-  private Future<?> renewalFuture;
+  private long tokenMaxDate = 0;
+  private String tokenRenewer;
+  private Future<?> renewalOrRegenerationFuture;
 
   public AppLevelTimelineCollector(ApplicationId appId) {
     this(appId, null);
@@ -75,13 +77,32 @@ public class AppLevelTimelineCollector extends TimelineCollector {
 
   void setDelegationTokenAndFutureForApp(
       Token<TimelineDelegationTokenIdentifier> token,
-      Future<?> appRenewalFuture) {
+      Future<?> appRenewalOrRegenerationFuture, long tknMaxDate,
+      String renewer) {
     this.delegationTokenForApp = token;
-    this.renewalFuture = appRenewalFuture;
+    this.tokenMaxDate = tknMaxDate;
+    this.tokenRenewer = renewer;
+    this.renewalOrRegenerationFuture = appRenewalOrRegenerationFuture;
   }
 
-  void setRenewalFutureForApp(Future<?> appRenewalFuture) {
-    this.renewalFuture = appRenewalFuture;
+  void setRenewalOrRegenerationFutureForApp(
+      Future<?> appRenewalOrRegenerationFuture) {
+    this.renewalOrRegenerationFuture = appRenewalOrRegenerationFuture;
+  }
+
+  void cancelRenewalOrRegenerationFutureForApp() {
+    if (renewalOrRegenerationFuture != null &&
+        !renewalOrRegenerationFuture.isDone()) {
+      renewalOrRegenerationFuture.cancel(true);
+    }
+  }
+
+  long getAppDelegationTokenMaxDate() {
+    return tokenMaxDate;
+  }
+
+  String getAppDelegationTokenRenewer() {
+    return tokenRenewer;
   }
 
   @VisibleForTesting
@@ -109,9 +130,7 @@ public class AppLevelTimelineCollector extends TimelineCollector {
 
   @Override
   protected void serviceStop() throws Exception {
-    if (renewalFuture != null && !renewalFuture.isDone()) {
-      renewalFuture.cancel(true);
-    }
+    cancelRenewalOrRegenerationFutureForApp();
     super.serviceStop();
   }
 

http://git-wip-us.apache.org/repos/asf/hadoop/blob/472461ee/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/NodeTimelineCollectorManager.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/NodeTimelineCollectorManager.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/NodeTimelineCollectorManager.java
index 1b1b373..68a68f0 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/NodeTimelineCollectorManager.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/collector/NodeTimelineCollectorManager.java
@@ -87,6 +87,8 @@ public class NodeTimelineCollectorManager extends TimelineCollectorManager
{
 
   private static final long TIME_BEFORE_RENEW_DATE = 10 * 1000; // 10 seconds.
 
+  private static final long TIME_BEFORE_EXPIRY = 5 * 60 * 1000; // 5 minutes.
+
   static final String COLLECTOR_MANAGER_ATTR_KEY = "collector.manager";
 
   @VisibleForTesting
@@ -176,10 +178,8 @@ public class NodeTimelineCollectorManager extends TimelineCollectorManager
{
   public long renewTokenForAppCollector(
       AppLevelTimelineCollector appCollector) throws IOException {
     if (appCollector.getDelegationTokenForApp() != null) {
-      TimelineDelegationTokenIdentifier identifier =
-          appCollector.getDelegationTokenForApp().decodeIdentifier();
       return tokenMgrService.renewToken(appCollector.getDelegationTokenForApp(),
-          identifier.getRenewer().toString());
+          appCollector.getAppDelegationTokenRenewer());
     } else {
       LOG.info("Delegation token not available for renewal for app " +
           appCollector.getTimelineEntityContext().getAppId());
@@ -196,6 +196,42 @@ public class NodeTimelineCollectorManager extends TimelineCollectorManager
{
     }
   }
 
+  private long getRenewalDelay(long renewInterval) {
+    return ((renewInterval > TIME_BEFORE_RENEW_DATE) ?
+        renewInterval - TIME_BEFORE_RENEW_DATE : renewInterval);
+  }
+
+  private long getRegenerationDelay(long tokenMaxDate) {
+    long regenerateTime = tokenMaxDate - Time.now();
+    return ((regenerateTime > TIME_BEFORE_EXPIRY) ?
+        regenerateTime - TIME_BEFORE_EXPIRY : regenerateTime);
+  }
+
+  private org.apache.hadoop.yarn.api.records.Token generateTokenAndSetTimer(
+      ApplicationId appId, AppLevelTimelineCollector appCollector)
+      throws IOException {
+    Token<TimelineDelegationTokenIdentifier> timelineToken =
+        generateTokenForAppCollector(appCollector.getAppUser());
+    TimelineDelegationTokenIdentifier tokenId =
+        timelineToken.decodeIdentifier();
+    long renewalDelay = getRenewalDelay(tokenRenewInterval);
+    long regenerationDelay = getRegenerationDelay(tokenId.getMaxDate());
+    if (renewalDelay > 0 || regenerationDelay > 0) {
+      boolean isTimerForRenewal = renewalDelay < regenerationDelay;
+      Future<?> renewalOrRegenerationFuture = tokenRenewalExecutor.schedule(
+          new CollectorTokenRenewer(appId, isTimerForRenewal),
+          isTimerForRenewal? renewalDelay : regenerationDelay,
+          TimeUnit.MILLISECONDS);
+      appCollector.setDelegationTokenAndFutureForApp(timelineToken,
+          renewalOrRegenerationFuture, tokenId.getMaxDate(),
+          tokenId.getRenewer().toString());
+    }
+    LOG.info("Generated a new token " + timelineToken + " for app " + appId);
+    return org.apache.hadoop.yarn.api.records.Token.newInstance(
+        timelineToken.getIdentifier(), timelineToken.getKind().toString(),
+        timelineToken.getPassword(), timelineToken.getService().toString());
+  }
+
   @Override
   protected void doPostPut(ApplicationId appId, TimelineCollector collector) {
     try {
@@ -206,19 +242,8 @@ public class NodeTimelineCollectorManager extends TimelineCollectorManager
{
       if (UserGroupInformation.isSecurityEnabled() &&
           collector instanceof AppLevelTimelineCollector) {
         AppLevelTimelineCollector appCollector =
-            (AppLevelTimelineCollector)collector;
-        Token<TimelineDelegationTokenIdentifier> timelineToken =
-            generateTokenForAppCollector(appCollector.getAppUser());
-        long renewalDelay = (tokenRenewInterval > TIME_BEFORE_RENEW_DATE) ?
-            tokenRenewInterval - TIME_BEFORE_RENEW_DATE : tokenRenewInterval;
-        Future<?> renewalFuture =
-            tokenRenewalExecutor.schedule(new CollectorTokenRenewer(appId),
-                renewalDelay, TimeUnit.MILLISECONDS);
-        appCollector.setDelegationTokenAndFutureForApp(timelineToken,
-            renewalFuture);
-        token = org.apache.hadoop.yarn.api.records.Token.newInstance(
-            timelineToken.getIdentifier(), timelineToken.getKind().toString(),
-            timelineToken.getPassword(), timelineToken.getService().toString());
+            (AppLevelTimelineCollector) collector;
+        token = generateTokenAndSetTimer(appId, appCollector);
       }
       // Report to NM if a new collector is added.
       reportNewCollectorInfoToNM(appId, token);
@@ -365,16 +390,54 @@ public class NodeTimelineCollectorManager extends TimelineCollectorManager
{
 
   private final class CollectorTokenRenewer implements Runnable {
     private ApplicationId appId;
-    private CollectorTokenRenewer(ApplicationId applicationId) {
+    // Indicates whether timer is for renewal or regeneration of token.
+    private boolean timerForRenewal = true;
+    private CollectorTokenRenewer(ApplicationId applicationId,
+        boolean forRenewal) {
       appId = applicationId;
+      timerForRenewal = forRenewal;
+    }
+
+    private void renewToken(AppLevelTimelineCollector appCollector)
+        throws IOException {
+      long newExpirationTime = renewTokenForAppCollector(appCollector);
+      // Set renewal or regeneration timer based on delay.
+      long renewalDelay = 0;
+      if (newExpirationTime > 0) {
+        LOG.info("Renewed token for " + appId + " with new expiration " +
+            "timestamp = " + newExpirationTime);
+        renewalDelay = getRenewalDelay(newExpirationTime - Time.now());
+      }
+      long regenerationDelay =
+          getRegenerationDelay(appCollector.getAppDelegationTokenMaxDate());
+      if (renewalDelay > 0 || regenerationDelay > 0) {
+        this.timerForRenewal = renewalDelay < regenerationDelay;
+        Future<?> renewalOrRegenerationFuture = tokenRenewalExecutor.schedule(
+            this, timerForRenewal ? renewalDelay : regenerationDelay,
+            TimeUnit.MILLISECONDS);
+        appCollector.setRenewalOrRegenerationFutureForApp(
+            renewalOrRegenerationFuture);
+      }
+    }
+
+    private void regenerateToken(AppLevelTimelineCollector appCollector)
+        throws IOException {
+      org.apache.hadoop.yarn.api.records.Token token =
+          generateTokenAndSetTimer(appId, appCollector);
+      // Report to NM if a new collector is added.
+      try {
+        reportNewCollectorInfoToNM(appId, token);
+      } catch (YarnException e) {
+        LOG.warn("Unable to report regenerated token to NM for " + appId);
+      }
     }
 
     @Override
     public void run() {
       TimelineCollector collector = get(appId);
       if (collector == null) {
-        LOG.info("Cannot find active collector while renewing token for " +
-            appId);
+        LOG.info("Cannot find active collector while " + (timerForRenewal ?
+            "renewing" : "regenerating") + " token for " + appId);
         return;
       }
       AppLevelTimelineCollector appCollector =
@@ -383,19 +446,14 @@ public class NodeTimelineCollectorManager extends TimelineCollectorManager
{
       synchronized (collector) {
         if (!collector.isStopped()) {
           try {
-            long newExpirationTime = renewTokenForAppCollector(appCollector);
-            if (newExpirationTime > 0) {
-              long renewInterval = newExpirationTime - Time.now();
-              long renewalDelay = (renewInterval > TIME_BEFORE_RENEW_DATE) ?
-                  renewInterval - TIME_BEFORE_RENEW_DATE : renewInterval;
-              LOG.info("Renewed token for " + appId + " with new expiration " +
-                  "timestamp = " + newExpirationTime);
-              Future<?> renewalFuture = tokenRenewalExecutor.schedule(
-                  this, renewalDelay, TimeUnit.MILLISECONDS);
-              appCollector.setRenewalFutureForApp(renewalFuture);
+            if (timerForRenewal) {
+              renewToken(appCollector);
+            } else {
+              regenerateToken(appCollector);
             }
           } catch (Exception e) {
-            LOG.warn("Unable to renew token for " + appId);
+            LOG.warn("Unable to " + (timerForRenewal ? "renew" : "regenerate") +
+                " token for " + appId, e);
           }
         }
       }

http://git-wip-us.apache.org/repos/asf/hadoop/blob/472461ee/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/security/TimelineV2DelegationTokenSecretManagerService.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/security/TimelineV2DelegationTokenSecretManagerService.java
b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/security/TimelineV2DelegationTokenSecretManagerService.java
index 39f0fc6..de5ccdc 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/security/TimelineV2DelegationTokenSecretManagerService.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/security/TimelineV2DelegationTokenSecretManagerService.java
@@ -20,6 +20,8 @@ package org.apache.hadoop.yarn.server.timelineservice.security;
 
 import java.io.IOException;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.classification.InterfaceAudience.Private;
 import org.apache.hadoop.classification.InterfaceStability.Unstable;
 import org.apache.hadoop.io.Text;
@@ -73,6 +75,9 @@ public class TimelineV2DelegationTokenSecretManagerService extends
   public static class TimelineV2DelegationTokenSecretManager extends
       AbstractDelegationTokenSecretManager<TimelineDelegationTokenIdentifier> {
 
+    private static final Log LOG =
+        LogFactory.getLog(TimelineV2DelegationTokenSecretManager.class);
+
     /**
      * Create a timeline v2 secret manager.
      * @param delegationKeyUpdateInterval the number of milliseconds for rolling
@@ -111,5 +116,11 @@ public class TimelineV2DelegationTokenSecretManagerService extends
     public TimelineDelegationTokenIdentifier createIdentifier() {
       return new TimelineDelegationTokenIdentifier();
     }
+
+    @Override
+    protected void logExpireToken(TimelineDelegationTokenIdentifier ident)
+        throws IOException {
+      LOG.info("Token " + ident + " expired.");
+    }
   }
 }


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