HADOOP-15390. Yarn RM logs flooded by DelegationTokenRenewer trying to renew KMS tokens (xiaochen via rkanter)

(cherry picked from commit 7ab08a9c37a76edbe02d556fcfb2e637f45afc21)

 Conflicts:
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/security/TestDelegationTokenRenewer.java

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/KMSTokenRenewer.java

@@ -58,9 +58,9 @@ public class KMSTokenRenewer extends TokenRenewer {
     try {
       if (!(keyProvider instanceof
           KeyProviderDelegationTokenExtension.DelegationTokenExtension)) {
-        LOG.warn("keyProvider {} cannot renew token {}.",
-            keyProvider == null ? "null" : keyProvider.getClass(), token);
-        return 0;
+        throw new IOException(String
+            .format("keyProvider %s cannot renew token [%s]",
+                keyProvider == null ? "null" : keyProvider.getClass(), token));
       }
       return ((KeyProviderDelegationTokenExtension.DelegationTokenExtension)
           keyProvider).renewDelegationToken(token);
@@ -78,9 +78,9 @@ public class KMSTokenRenewer extends TokenRenewer {
     try {
       if (!(keyProvider instanceof
           KeyProviderDelegationTokenExtension.DelegationTokenExtension)) {
-        LOG.warn("keyProvider {} cannot cancel token {}.",
-            keyProvider == null ? "null" : keyProvider.getClass(), token);
-        return;
+        throw new IOException(String
+            .format("keyProvider %s cannot cancel token [%s]",
+                keyProvider == null ? "null" : keyProvider.getClass(), token));
       }
       ((KeyProviderDelegationTokenExtension.DelegationTokenExtension)
           keyProvider).cancelDelegationToken(token);

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/security/DelegationTokenRenewer.java

@@ -572,6 +572,10 @@ public class DelegationTokenRenewer extends AbstractService {
       throws IOException {
     // calculate timer time
     long expiresIn = token.expirationDate - System.currentTimeMillis();
+    if (expiresIn <= 0) {
+      LOG.info("Will not renew token " + token);
+      return;
+    }
     long renewIn = token.expirationDate - expiresIn/10; // little bit before the expiration
     // need to create new task every time
     RenewalTimerTask tTask = new RenewalTimerTask(token);

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/security/TestDelegationTokenRenewer.java

@@ -20,6 +20,7 @@ package org.apache.hadoop.yarn.server.resourcemanager.security;
 
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 import static org.junit.Assert.fail;
 import static org.mockito.Matchers.any;
 import static org.mockito.Mockito.doAnswer;
@@ -1262,4 +1263,21 @@ public class TestDelegationTokenRenewer {
     Assert.assertFalse(renewer.getDelegationTokens().contains(token1));
   }
 
+  // Test if the token renewer returned an invalid expiration time, that token's
+  // renewal should be ignored.
+  @Test
+  public void testTokenRenewerInvalidReturn() throws Exception {
+    DelegationTokenToRenew mockDttr = mock(DelegationTokenToRenew.class);
+    mockDttr.expirationDate = 0;
+    delegationTokenRenewer.setTimerForTokenRenewal(mockDttr);
+    assertNull(mockDttr.timerTask);
+
+    mockDttr.expirationDate = -1;
+    delegationTokenRenewer.setTimerForTokenRenewal(mockDttr);
+    assertNull(mockDttr.timerTask);
+
+    mockDttr.expirationDate = System.currentTimeMillis() - 1;
+    delegationTokenRenewer.setTimerForTokenRenewal(mockDttr);
+    assertNull(mockDttr.timerTask);
+  }
 }