Hi,
I've deployed a Secure YARN 2.7.1 cluster with HDFS encryption and am trying
to run the pyspark shell using Spark 1.5.1
pyspark shell works and I can run a sample code to calculate PI just fine.
However, when I try to stop the current context (e.g., sc.stop()) and then
create a new context (sc = SparkContext()), I get the error below.
I have also seen errors such as: "token (HDFS_DELEGATION_TOKEN token 42 for
hadoop) can't be found in cache",
Does anyone know if it is possible to stop and create a new Spark context
within a single JVM process (driver) and have that work when dealing with
delegation tokens from Secure YARN/HDFS?
Thanks.
15/11/11 10:19:53 INFO yarn.Client: Setting up container launch context for
our AM
15/11/11 10:19:53 INFO yarn.Client: Setting up the launch environment for
our AM container
15/11/11 10:19:53 INFO yarn.Client: Credentials file set to:
credentials-37915c3e-1e90-44b9-add1-521598cea846
15/11/11 10:19:53 INFO yarn.YarnSparkHadoopUtil: getting token for namenode:
hdfs://test6-allwkrbsec-001:9000/user/hadoop/.sparkStaging/application_1446695132208_0042
15/11/11 10:19:53 ERROR spark.SparkContext: Error initializing SparkContext.
org.apache.hadoop.ipc.RemoteException(java.io.IOException): Delegation Token
can be issued only with kerberos or web authentication
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getDelegationToken(FSNamesystem.java:6638)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getDelegationToken(NameNodeRpcServer.java:563)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getDelegationToken(ClientNamenodeProtocolServerSideTranslatorPB.java:987)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043)
at org.apache.hadoop.ipc.Client.call(Client.java:1476)
at org.apache.hadoop.ipc.Client.call(Client.java:1407)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
at com.sun.proxy.$Proxy12.getDelegationToken(Unknown Source)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getDelegationToken(ClientNamenodeProtocolTranslatorPB.java:933)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy13.getDelegationToken(Unknown Source)
at
org.apache.hadoop.hdfs.DFSClient.getDelegationToken(DFSClient.java:1044)
at
org.apache.hadoop.hdfs.DistributedFileSystem.getDelegationToken(DistributedFileSystem.java:1543)
at
org.apache.hadoop.fs.FileSystem.collectDelegationTokens(FileSystem.java:530)
at
org.apache.hadoop.fs.FileSystem.addDelegationTokens(FileSystem.java:508)
at
org.apache.hadoop.hdfs.DistributedFileSystem.addDelegationTokens(DistributedFileSystem.java:2228)
at
org.apache.spark.deploy.yarn.YarnSparkHadoopUtil$$anonfun$obtainTokensForNamenodes$1.apply(YarnSparkHadoopUtil.scala:126)
at
org.apache.spark.deploy.yarn.YarnSparkHadoopUtil$$anonfun$obtainTokensForNamenodes$1.apply(YarnSparkHadoopUtil.scala:123)
at scala.collection.immutable.Set$Set1.foreach(Set.scala:74)
at
org.apache.spark.deploy.yarn.YarnSparkHadoopUtil.obtainTokensForNamenodes(YarnSparkHadoopUtil.scala:123)
at
org.apache.spark.deploy.yarn.Client.getTokenRenewalInterval(Client.scala:495)
at
org.apache.spark.deploy.yarn.Client.setupLaunchEnv(Client.scala:528)
at
org.apache.spark.deploy.yarn.Client.createContainerLaunchContext(Client.scala:628)
at
org.apache.spark.deploy.yarn.Client.submitApplication(Client.scala:119)
at
org.apache.spark.scheduler.cluster.YarnClientSchedulerBackend.start(YarnClientSchedulerBackend.scala:56)
at
org.apache.spark.scheduler.TaskSchedulerImpl.start(TaskSchedulerImpl.scala:144)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:523)
at
org.apache.spark.api.java.JavaSparkContext.<init>(JavaSparkContext.scala:61)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:234)
at
py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:379)
at py4j.Gateway.invoke(Gateway.java:214)
at
py4j.commands.ConstructorCommand.invokeConstructor(ConstructorCommand.java:79)
at
py4j.commands.ConstructorCommand.execute(ConstructorCommand.java:68)
at py4j.GatewayConnection.run(GatewayConnection.java:207)
at java.lang.Thread.run(Thread.java:745)
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