Support Questions
Find answers, ask questions, and share your expertise
Announcements
Alert: Welcome to the Unified Cloudera Community. Former HCC members be sure to read and learn how to activate your account here.

quickstart VM connection issues

Solved Go to solution

quickstart VM connection issues

New Contributor

Hi,

 

I have been using the cloudera quickstart vm for 3 months and have started receiving this error of late when I try to try to run any command on hdfs(hadoop fs -ls / for example). Has anyone come across this before:

 

**Note :

 

I have tried restarting the namenode, checking for any errors in the hosts file, restarting the machine--none of this has worked :

 

 18/02/12 12:43:13 WARN ipc.Client: Failed to connect to server: quickstart.cloudera/127.0.0.1:8020: try once and fail.
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
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$Connection.setupConnection(Client.java:648)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:744)
at org.apache.hadoop.ipc.Client$Connection.access$3000(Client.java:396)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1555)
at org.apache.hadoop.ipc.Client.call(Client.java:1478)
at org.apache.hadoop.ipc.Client.call(Client.java:1439)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:230)
at com.sun.proxy.$Proxy16.getFileInfo(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:771)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:260)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:104)
at com.sun.proxy.$Proxy17.getFileInfo(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:2126)
at org.apache.hadoop.hdfs.DistributedFileSystem$20.doCall(DistributedFileSystem.java:1262)
at org.apache.hadoop.hdfs.DistributedFileSystem$20.doCall(DistributedFileSystem.java:1258)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1258)
at org.apache.hadoop.fs.Globber.getFileStatus(Globber.java:64)
at org.apache.hadoop.fs.Globber.doGlob(Globber.java:272)
at org.apache.hadoop.fs.Globber.glob(Globber.java:151)
at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:1715)
at org.apache.hadoop.fs.shell.PathData.expandAsGlob(PathData.java:326)
at org.apache.hadoop.fs.shell.Command.expandArgument(Command.java:235)
at org.apache.hadoop.fs.shell.Command.expandArguments(Command.java:218)
at org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:102)
at org.apache.hadoop.fs.shell.Command.run(Command.java:165)
at org.apache.hadoop.fs.FsShell.run(FsShell.java:315)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
at org.apache.hadoop.fs.FsShell.main(FsShell.java:372)
ls: Call From quickstart.cloudera/127.0.0.1 to quickstart.cloudera:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused

 

Thanks for the Help

 

Nithin

 

1 ACCEPTED SOLUTION

Accepted Solutions

Re: quickstart VM connection issues

New Contributor

Found solution:

 

https://community.hortonworks.com/questions/7455/namenode-can-not-be-started.html

 

Found this error in the namenode logs : /var/logs/hadoop/, the error was Failed to load image from FSImageFile(file=/var/lib/hadoop-hdfs/cache/hdfs/dfs/name/current/fsimage_****, cpktTxId=0000000000000425183)

 

Went to the mentioned location and deleted the FS image which was 0 Bytes, see above link. Restarted the namenode and datanodes and everythings works as expected.

 

Thanks!

1 REPLY 1

Re: quickstart VM connection issues

New Contributor

Found solution:

 

https://community.hortonworks.com/questions/7455/namenode-can-not-be-started.html

 

Found this error in the namenode logs : /var/logs/hadoop/, the error was Failed to load image from FSImageFile(file=/var/lib/hadoop-hdfs/cache/hdfs/dfs/name/current/fsimage_****, cpktTxId=0000000000000425183)

 

Went to the mentioned location and deleted the FS image which was 0 Bytes, see above link. Restarted the namenode and datanodes and everythings works as expected.

 

Thanks!

Don't have an account?
Coming from Hortonworks? Activate your account here