your HDFSClient still keeps the lease for the file. You may want to close the file (the release the lease) before appending.
On Wed, Oct 13, 2010 at 7:14 AM, Ying Tang <ivytang0...@gmail.com> wrote: > I have used python to create file and read the file via thrift , and my > hadoop is 0.20. > But when i try to append the existed file , and my code is: > > def write_file(self,name,data): > try : > path=Pathname() > path.pathname=name > filehandler=self.client.append(path) > print self.client.write(filehandler,data) > except ThriftIOException , tx: > print "Error in writing the file with the given name",name > print tx.message > return False > > When append the file , this code self.client.append(path) throws an > exception. > > org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException: failed to > create file /user/hadoop/test/testtxt5 for DFSClient_-1186455082 on client > 10.18.138.201 because current leaseholder is trying to recreate file. > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startFileInternal(FSNamesystem.java:1068) > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.appendFile(FSNamesystem.java:1181) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.append(NameNode.java:422) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:512) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:968) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:964) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:396) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:962) > > > Can anyone explain this ? > > Thanks! > > > > > -- > Best regards, > > Ivy Tang > > > >