I think lots of components expect to have read/write permission to a /tmp directory on HDFS.
Glad it works out! _____________________________ From: Andy Davidson <a...@santacruzintegration.com<mailto:a...@santacruzintegration.com>> Sent: Thursday, August 18, 2016 5:12 PM Subject: Re: pyspark unable to create UDF: java.lang.RuntimeException: org.apache.hadoop.fs.FileAlreadyExistsException: Parent path is not a directory: /tmp tmp To: Felix Cheung <felixcheun...@hotmail.com<mailto:felixcheun...@hotmail.com>>, user @spark <user@spark.apache.org<mailto:user@spark.apache.org>> NICE CATCH!!! Many thanks. I spent all day on this bug The error msg report /tmp. I did not think to look on hdfs. [ec2-user@ip-172-31-22-140 notebooks]$ hadoop fs -ls hdfs:///tmp/ Found 1 items -rw-r--r-- 3 ec2-user supergroup 418 2016-04-13 22:49 hdfs:///tmp [ec2-user@ip-172-31-22-140 notebooks]$ I have no idea how hdfs:///tmp got created. I deleted it. This causes a bunch of exceptions. These exceptions has useful message. I was able to fix the problem as follows $ hadoop fs -rmr hdfs:///tmp Now I run the notebook. It creates hdfs:///tmp/hive but the permission are wrong $ hadoop fs -chmod 777 hdfs:///tmp/hive From: Felix Cheung <felixcheun...@hotmail.com<mailto:felixcheun...@hotmail.com>> Date: Thursday, August 18, 2016 at 3:37 PM To: Andrew Davidson <a...@santacruzintegration.com<mailto:a...@santacruzintegration.com>>, "user @spark" <user@spark.apache.org<mailto:user@spark.apache.org>> Subject: Re: pyspark unable to create UDF: java.lang.RuntimeException: org.apache.hadoop.fs.FileAlreadyExistsException: Parent path is not a directory: /tmp tmp Do you have a file called tmp at / on HDFS? On Thu, Aug 18, 2016 at 2:57 PM -0700, "Andy Davidson" <a...@santacruzintegration.com<mailto:a...@santacruzintegration.com>> wrote: For unknown reason I can not create UDF when I run the attached notebook on my cluster. I get the following error Py4JJavaError: An error occurred while calling None.org.apache.spark.sql.hive.HiveContext.: java.lang.RuntimeException: org.apache.hadoop.fs.FileAlreadyExistsException: Parent path is not a directory: /tmp tmp The notebook runs fine on my Mac In general I am able to run non UDF spark code with out any trouble I start the notebook server as the user “ec2-user" and uses master URL spark://ec2-51-215-120-63.us-west-1.compute.amazonaws.com:6066 I found the following message in the notebook server log file. I have log level set to warn 16/08/18 21:38:45 WARN ObjectStore: Version information not found in metastore. hive.metastore.schema.verification is not enabled so recording the schema version 1.2.0 16/08/18 21:38:45 WARN ObjectStore: Failed to get database default, returning NoSuchObjectException The cluster was originally created using spark-1.6.1-bin-hadoop2.6/ec2/spark-ec2 #from pyspark.sql import SQLContext, HiveContext #sqlContext = SQLContext(sc) #from pyspark.sql import DataFrame #from pyspark.sql import functions from pyspark.sql.types import StringType from pyspark.sql.functions import udf print("spark version: {}".format(sc.version)) import sys print("python version: {}".format(sys.version)) spark version: 1.6.1python version: 3.4.3 (default, Apr 1 2015, 18:10:40) [GCC 4.8.2 20140120 (Red Hat 4.8.2-16)] # functions.lower() raises # py4j.Py4JException: Method lower([class java.lang.String]) does not exist# work around define a UDFtoLowerUDFRetType = StringType()#toLowerUDF = udf(lambda s : s.lower(), toLowerUDFRetType)toLowerUDF = udf(lambda s : s.lower(), StringType()) You must build Spark with Hive. Export 'SPARK_HIVE=true' and run build/sbt assembly Py4JJavaErrorTraceback (most recent call last)<ipython-input-2-2e0f7c0bb4f9> in <module>() 4 toLowerUDFRetType = StringType() 5 #toLowerUDF = udf(lambda s : s.lower(), toLowerUDFRetType)----> 6 toLowerUDF = udf(lambda s : s.lower(), StringType())/root/spark/python/pyspark/sql/functions.py in udf(f, returnType) 1595 [Row(slen=5), Row(slen=3)] 1596 """-> 1597 return UserDefinedFunction(f, returnType) 1598 1599 blacklist = ['map', 'since', 'ignore_unicode_prefix']/root/spark/python/pyspark/sql/functions.py in __init__(self, func, returnType, name) 1556 self.returnType = returnType 1557 self._broadcast = None-> 1558 self._judf = self._create_judf(name) 1559 1560 def _create_judf(self, name):/root/spark/python/pyspark/sql/functions.py in _create_judf(self, name) 1567 pickled_command, broadcast_vars, env, includes = _prepare_for_python_RDD(sc, command, self) 1568 ctx = SQLContext.getOrCreate(sc)-> 1569 jdt = ctx._ssql_ctx.parseDataType(self.returnType.json()) 1570 if name is None: 1571 name = f.__name__ if hasattr(f, '__name__') else f.__class__.__name__/root/spark/python/pyspark/sql/context.py in _ssql_ctx(self) 681 try: 682 if not hasattr(self, '_scala_HiveContext'):--> 683 self._scala_HiveContext = self._get_hive_ctx() 684 return self._scala_HiveContext 685 except Py4JError as e:/root/spark/python/pyspark/sql/context.py in _get_hive_ctx(self) 690 691 def _get_hive_ctx(self):--> 692 return self._jvm.HiveContext(self._jsc.sc()) 693 694 def refreshTable(self, tableName):/root/spark/python/lib/py4j-0.9-src.zip/py4j/java_gateway.py in __call__(self, *args) 1062 answer = self._gateway_client.send_command(command) 1063 return_value = get_return_value(-> 1064 answer, self._gateway_client, None, self._fqn) 1065 1066 for temp_arg in temp_args:/root/spark/python/pyspark/sql/utils.py in deco(*a, **kw) 43 def deco(*a, **kw): 44 try:---> 45 return f(*a, **kw) 46 except py4j.protocol.Py4JJavaError as e: 47 s = e.java_exception.toString()/root/spark/python/lib/py4j-0.9-src.zip/py4j/protocol.py in get_return_value(answer, gateway_client, target_id, name) 306 raise Py4JJavaError( 307 "An error occurred while calling {0}{1}{2}.\n".--> 308 format(target_id, ".", name), value) 309 else: 310 raise Py4JError(Py4JJavaError: An error occurred while calling None.org.apache.spark.sql.hive.HiveContext.: java.lang.RuntimeException: org.apache.hadoop.fs.FileAlreadyExistsException: Parent path is not a directory: /tmp tmp at org.apache.hadoop.hdfs.server.namenode.FSDirectory.mkdirs(FSDirectory.java:1489) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInternal(FSNamesystem.java:2979) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:2932) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:2911) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:649) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:417) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44096) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1695) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1691) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1689) at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522) at org.apache.spark.sql.hive.client.ClientWrapper.<init>(ClientWrapper.scala:204) at org.apache.spark.sql.hive.client.IsolatedClientLoader.createClient(IsolatedClientLoader.scala:238) at org.apache.spark.sql.hive.HiveContext.executionHive$lzycompute(HiveContext.scala:218) at org.apache.spark.sql.hive.HiveContext.executionHive(HiveContext.scala:208) at org.apache.spark.sql.hive.HiveContext.functionRegistry$lzycompute(HiveContext.scala:462) at org.apache.spark.sql.hive.HiveContext.functionRegistry(HiveContext.scala:461) at org.apache.spark.sql.UDFRegistration.<init>(UDFRegistration.scala:40) at org.apache.spark.sql.SQLContext.<init>(SQLContext.scala:330) at org.apache.spark.sql.hive.HiveContext.<init>(HiveContext.scala:90) at org.apache.spark.sql.hive.HiveContext.<init>(HiveContext.scala:101) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:234) at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:381) 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:209) at java.lang.Thread.run(Thread.java:745)Caused by: org.apache.hadoop.fs.FileAlreadyExistsException: Parent path is not a directory: /tmp tmp at org.apache.hadoop.hdfs.server.namenode.FSDirectory.mkdirs(FSDirectory.java:1489) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInternal(FSNamesystem.java:2979) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:2932) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:2911) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:649) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:417) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44096) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1695) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1691) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1689) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:90) at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:57) at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:2110) at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:2079) at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:543) at org.apache.hadoop.hive.ql.exec.Utilities.createDirsWithPermission(Utilities.java:3679) at org.apache.hadoop.hive.ql.session.SessionState.createRootHDFSDir(SessionState.java:597) at org.apache.hadoop.hive.ql.session.SessionState.createSessionDirs(SessionState.java:554) at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:508) ... 21 moreCaused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.fs.FileAlreadyExistsException): Parent path is not a directory: /tmp tmp at org.apache.hadoop.hdfs.server.namenode.FSDirectory.mkdirs(FSDirectory.java:1489) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInternal(FSNamesystem.java:2979) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:2932) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:2911) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:649) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:417) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44096) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1695) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1691) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1689) at org.apache.hadoop.ipc.Client.call(Client.java:1225) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202) at com.sun.proxy.$Proxy21.mkdirs(Unknown Source) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83) at com.sun.proxy.$Proxy21.mkdirs(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.mkdirs(ClientNamenodeProtocolTranslatorPB.java:425) at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:2108) ... 27 more
