topic Re: Problem in connection to HDFS in Talend Studio

Problem in connection to HDFS

Anonymous — Sat, 16 Nov 2024 10:53:47 GMT

Hello,
I want to transfer the file from the local system folder to HDFS.
Here is the screenshot of the Job I have created.

But when i run my job it gives me this error:

Starting job MovetoHDFS at 06:19 22/12/2015.
 connecting to socket on port 3833
 connected
: org.apache.hadoop.security.UserGroupInformation - PriviledgedActionException as:hduser cause:java.net.ConnectException: Call to 192.168.76.128/192.168.76.128:50070 failed on connection exception: java.net.ConnectException: Connection refused
Exception in component tHDFSPut_1
java.net.ConnectException: Call to 192.168.76.128/192.168.76.128:50070 failed on connection exception: java.net.ConnectException: Connection refused
	at org.apache.hadoop.ipc.Client.wrapException(Client.java:1095)
	at org.apache.hadoop.ipc.Client.call(Client.java:1071)
	at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
	at com.sun.proxy.$Proxy1.getProtocolVersion(Unknown Source)
	at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:396)
	at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:379)
	at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:119)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:238)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:203)
	at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:89)
	at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1386)
	at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
	at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1404)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:254)
	at org.apache.hadoop.fs.FileSystem$1.run(FileSystem.java:117)
	at org.apache.hadoop.fs.FileSystem$1.run(FileSystem.java:115)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1083)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:115)
	at local_project.movetohdfs_0_1.MovetoHDFS.tFileList_1Process(MovetoHDFS.java:574)
	at local_project.movetohdfs_0_1.MovetoHDFS.tHDFSConnection_1Process(MovetoHDFS.java:376)
	at local_project.movetohdfs_0_1.MovetoHDFS.runJobInTOS(MovetoHDFS.java:979)
	at local_project.movetohdfs_0_1.MovetoHDFS.main(MovetoHDFS.java:836)
Caused by: java.net.ConnectException: Connection refused
	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:744)
	at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:656)
	at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:434)
	at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:560)
	at org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:184)
	at org.apache.hadoop.ipc.Client.getConnection(Client.java:1202)
	at org.apache.hadoop.ipc.Client.call(Client.java:1046)
	... 22 more
 disconnected
Job MovetoHDFS ended at 06:20 22/12/2015.

I dont access HDFS directly using the user which I have logged in on VM.
I access HDFS using a new user "hduser".
I am using Talend Big Data Version 6.1 and my Apache Hadoop version is 2.6.0 .
So what should be the setting of the component tHDFSConnection???
Plz Help..

Re: Problem in connection to HDFS

Anonymous — Wed, 23 Dec 2015 07:34:45 GMT

Hi,
Please take a look at document about TalendHelpCenterupported Hadoop distribution versions
Best regards
Sabrina

Re: Problem in connection to HDFS

Anonymous — Wed, 23 Dec 2015 16:24:50 GMT

Hii,
Thank you for the reply.
I guess the connection error is resolved but there is still error in the tHDFSPut as their was earlier.
The error is as follows:

Starting job MovetoHDFS at 08:20 23/12/2015.
 connecting to socket on port 4067
 connected
: org.apache.hadoop.util.NativeCodeLoader - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Exception in component tHDFSPut_1
java.net.ConnectException: Call From ubuntu/127.0.1.1 to localhost:50070 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  
	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 org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:791)
	at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:731)
	at org.apache.hadoop.ipc.Client.call(Client.java:1472)
	at org.apache.hadoop.ipc.Client.call(Client.java:1399)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:241)
	at com.sun.proxy.$Proxy7.mkdirs(Unknown Source)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.mkdirs(ClientNamenodeProtocolTranslatorPB.java:539)
	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.$Proxy8.mkdirs(Unknown Source)
	at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:2759)
	at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:2730)
	at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:870)
	at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:866)
	at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
	at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirsInternal(DistributedFileSystem.java:866)
	at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:859)
	at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:1865)
	at local_project.movetohdfs_0_1.MovetoHDFS.tFileList_1Process(MovetoHDFS.java:586)
	at local_project.movetohdfs_0_1.MovetoHDFS.tHDFSConnection_1Process(MovetoHDFS.java:378)
	at local_project.movetohdfs_0_1.MovetoHDFS.runJobInTOS(MovetoHDFS.java:978)
	at local_project.movetohdfs_0_1.MovetoHDFS.main(MovetoHDFS.java:835)
Caused by: java.net.ConnectException: Connection refused
	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:744)
	at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:530)
	at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:494)
	at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:607)
	at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:705)
	at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:368)
	at org.apache.hadoop.ipc.Client.getConnection(Client.java:1521)
	at org.apache.hadoop.ipc.Client.call(Client.java:1438)
	... 23 more
 disconnected
Job MovetoHDFS ended at 08:21 23/12/2015.

How to resolve it??