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Posted to hdfs-user@hadoop.apache.org by td...@126.com on 2014/04/25 10:48:41 UTC
答复: 答复: hdfsConnect always success
Hi, Stanley Shi
What I want to say is hdfsConnect should return NULL or error, but it doesn’t.
Not the same as the declaration in hdfs.h.
Thanks.
发件人: user-return-15164-tdhkx=126.com@hadoop.apache.org [mailto:user-return-15164-tdhkx=126.com@hadoop.apache.org] 代表 Stanley Shi
发送时间: 2014年4月25日 15:51
收件人: user@hadoop.apache.org
主题: Re: 答复: hdfsConnect always success
NoRouteToHost, please check your network setting
Regards,
Stanley Shi,
<http://www.gopivotal.com/files/media/logos/pivotal-logo-email-signature.png>
On Fri, Apr 18, 2014 at 3:42 PM, <td...@126.com> wrote:
Hi,
No errors in hdfsConnect().
But if I call hdfsCreateDirectory() after hdfsConnect() , got errors as followed:
hdfsCreateDirectory(/tmp/root/00000629/): FileSystem#mkdirs error:
java.net.NoRouteToHostException: No Route to Host from Mas2/172.16.19.22 to 172.16.19.121:8020 failed on socket timeout exception: java.net.NoRouteToHostException: No route to host; For more details see: http://wiki.apache.org/hadoop/NoRouteToHost
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:525)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:783)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:756)
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$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy9.mkdirs(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.$Proxy9.mkdirs(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.mkdirs(ClientNamenodeProtocolTranslatorPB.java:467)
at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:2394)
at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:2365)
at org.apache.hadoop.hdfs.DistributedFileSystem$16.doCall(DistributedFileSystem.java:817)
at org.apache.hadoop.hdfs.DistributedFileSystem$16.doCall(DistributedFileSystem.java:813)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirsInternal(DistributedFileSystem.java:813)
at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:806)
at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:1933)
Caused by: java.net.NoRouteToHostException: No route to host
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:692)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:529)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:493)
at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:547)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:642)
at org.apache.hadoop.ipc.Client$Connection.access$2600(Client.java:314)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1399)
at org.apache.hadoop.ipc.Client.call(Client.java:1318)
... 19 more
It seems lazy connected.
Thanks
发件人: user-return-15069-tdhkx=126.com@hadoop.apache.org [mailto:user-return-15069-tdhkx=126.com@hadoop.apache.org] 代表 Gordon Wang
发送时间: 2014年4月18日 14:14
收件人: user@hadoop.apache.org
主题: Re: hdfsConnect always success
Do you got any error message in your log ?
2014-04-18 10:07 GMT+08:00 <td...@126.com>:
Hi,
When I run program as followed,connect to a remote host not existed, always return “HDFS connect OK.”
int main()
{
hdfsFS fs = NULL;
fs = hdfsConnect("172.16.19.28", 8020);
if (fs == NULL)
{
printf("HDFS connect error.\n");
return -1;
}
else
{
printf("HDFS connect OK.\n");
return 0;
}
}
--
Regards
Gordon Wang
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