I am not sure what could be the exact issue but when configuring secondary NN to NN, you need to tell your SNN where the actual NN resides. Try adding - dfs.http.address on your secondary namenode machine having value as <NN:port> on hdfs-site.xml Port should be on which your NN url is opening - means your NN web browser http port.
Regards, Praveenesh On Mon, Jun 4, 2012 at 4:37 PM, <ramon....@accenture.com> wrote: > Hello. I'm facing a issue when trying to configure my SecondaryNameNode on > a different machine than my NameNode. When both are on the same machine > everything works fine but after moving the secondary to a new machine I get: > > 2012-05-28 09:57:36,832 ERROR > org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException > as:hadoop cause:java.net.ConnectException: Connection refused > 2012-05-28 09:57:36,832 ERROR > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: Exception in > doCheckpoint: > 2012-05-28 09:57:36,834 ERROR > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: > java.net.ConnectException: Connection refused > at java.net.PlainSocketImpl.socketConnect(Native Method) > at > java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327) > at > java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:191) > at > java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180) > at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384) > at java.net.Socket.connect(Socket.java:546) > at java.net.Socket.connect(Socket.java:495) > at sun.net.NetworkClient.doConnect(NetworkClient.java:178) > at sun.net.www.http.HttpClient.openServer(HttpClient.java:409) > at sun.net.www.http.HttpClient.openServer(HttpClient.java:530) > at sun.net.www.http.HttpClient.<init>(HttpClient.java:240) > at sun.net.www.http.HttpClient.New(HttpClient.java:321) > at sun.net.www.http.HttpClient.New(HttpClient.java:338) > at > sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:935) > at > sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:876) > at > sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:801) > > Is there any configuration I'm missing? At this point my mapred-site.xml > is very simple just: > > <?xml version="1.0"?> > <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> > <configuration> > <property> > <name>mapred.job.tracker</name> > <value>hadoop00:9001</value> > </property> > <property> > <name>mapred.system.dir</name> > <value>/home/hadoop/mapred/system</value> > </property> > <property> > <name>mapred.local.dir</name> > <value>/home/hadoop/mapred/local</value> > </property> > <property> > <name>mapred.jobtracker.taskScheduler</name> > <value>org.apache.hadoop.mapred.FairScheduler</value> > </property> > <property> > <name>mapred.fairscheduler.allocation.file</name> > <value>/home/hadoop/hadoop/conf/fairscheduler.xml</value> > </property> > </configuration> > > > > ________________________________ > Subject to local law, communications with Accenture and its affiliates > including telephone calls and emails (including content), may be monitored > by our systems for the purposes of security and the assessment of internal > compliance with Accenture policy. > > ______________________________________________________________________________________ > > www.accenture.com >
