2.x is a new major release. 1.x and 2.x are not compatible. In 1.x, the RPC wire protocol used java serialization. In 2.x, the RPC wire protocol uses protobuf. A client must be compiled against 2.x and should use appropriate jars from 2.x to work with 2.x.
On Wed, Dec 18, 2013 at 10:45 AM, Ken Been <ken.b...@twosigma.com> wrote: > I am trying to make a 2.2.0 Java client work with a 1.1.2 server. The > error I am currently getting is below. I’d like to know if my problem is > because I have configured something wrong or because the versions are > simply not compatible for what I want to do. Thanks in advance for any > help. > > > > Ken > > > > at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:764) > > at org.apache.hadoop.ipc.Client.call(Client.java:1351) > > at org.apache.hadoop.ipc.Client.call(Client.java:1300) > > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206) > > at com.sun.proxy.$Proxy18.getFileInfo(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:601) > > at > org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186) > > at > org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102) > > at com.sun.proxy.$Proxy18.getFileInfo(Unknown Source) > > at > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:651) > > at > org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1679) > > at > org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:1106) > > at > org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:1102) > > at > org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) > > at > org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1102) > > at my code... > > Caused by: java.io.EOFException > > at java.io.DataInputStream.readInt(DataInputStream.java:392) > > at > org.apache.hadoop.ipc.Client$Connection.receiveRpcResponse(Client.java:995) > > at org.apache.hadoop.ipc.Client$Connection.run(Client.java:891) > -- http://hortonworks.com/download/ -- CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use of the individual or entity to which it is addressed and may contain information that is confidential, privileged and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any printing, copying, dissemination, distribution, disclosure or forwarding of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and delete it from your system. Thank You.
