Exception in thread "main" org.apache.hadoop.ipc.RemoteException: Server IPC version 9 cannot communicate with client version 4

[liulei <18...@qq.com>]

Hi All:
During using camel，i encounter  a problem that is RemoteException.
some infomation that the version of hdfs client is 2.16.0,and the version of 
camel-hdfs is 2.16.4 maybe be helpful to let you know about my program.
any reply is welcome, and thanks very much.

Exception in thread "main" org.apache.hadoop.ipc.RemoteException: Server IPC
version 9 cannot communicate with client version 4
	at org.apache.hadoop.ipc.Client.call(Client.java:1113)
	at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:229)
	at com.sun.proxy.$Proxy16.getProtocolVersion(Unknown Source)
	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:85)
	at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:62)
	at com.sun.proxy.$Proxy16.getProtocolVersion(Unknown Source)
	at org.apache.hadoop.ipc.RPC.checkVersion(RPC.java:422)
	at org.apache.hadoop.hdfs.DFSClient.createNamenode(DFSClient.java:183)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:281)
	at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:245)
	at
org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:100)
	at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1446)
	at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:67)
	at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1464)
	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:263)
	at org.apache.camel.component.hdfs.HdfsInfo.<init>(HdfsInfo.java:36)
	at
org.apache.camel.component.hdfs.HdfsInfoFactory.newHdfsInfo(HdfsInfoFactory.java:36)
	at
org.apache.camel.component.hdfs.HdfsConsumer.setupHdfs(HdfsConsumer.java:81)
	at
org.apache.camel.component.hdfs.HdfsConsumer.doStart(HdfsConsumer.java:66)
	at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
	at
org.apache.camel.impl.DefaultCamelContext.startService(DefaultCamelContext.java:3234)
	at
org.apache.camel.impl.DefaultCamelContext.doStartOrResumeRouteConsumers(DefaultCamelContext.java:3528)
	at
org.apache.camel.impl.DefaultCamelContext.doStartRouteConsumers(DefaultCamelContext.java:3464)
	at
org.apache.camel.impl.DefaultCamelContext.safelyStartRouteServices(DefaultCamelContext.java:3394)
	at
org.apache.camel.impl.DefaultCamelContext.doStartOrResumeRoutes(DefaultCamelContext.java:3162)
	at
org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:3018)
	at
org.apache.camel.impl.DefaultCamelContext.access$000(DefaultCamelContext.java:175)
	at
org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:2814)
	at
org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:2810)
	at
org.apache.camel.impl.DefaultCamelContext.doWithDefinedClassLoader(DefaultCamelContext.java:2833)
	at
org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:2810)
	at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
	at
org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:2779)
	at
com.ll.maven.EsWeb.Servlet.TestCamelAndHdfs.main(TestCamelAndHdfs.java:27)



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Re: Exception in thread "main" org.apache.hadoop.ipc.RemoteException: Server IPC version 9 cannot communicate with client version 4

[liulei <18...@qq.com>]

solution:
 HDFS / camel-hdfs
hdfs://hostName[:port][/path][?options]
For reading/writing from/to an HDFS filesystem using Hadoop 1.x
HDFS2 / camel-hdfs2
 hdfs2://hostName[:port][/path][?options]
For reading/writing from/to an HDFS filesystem using Hadoop 2.x
so:change dependency to hdfs2

 




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