You can see the configurations of your Datanode (in conf directory) to see if you have any miss configurations on names and ports of namenode.
Else you should see for firewalls or try to ping the Namenode from Hama server. It seams like a network problem. Kindly, Anastasis On 4 Σεπ 2013, at 11:45 π.μ., Vahe nr <[email protected]> wrote: > Dear all, > > I have a Hadoop cluster with one Namenode and one Datanode the cluster is > working on which I have executed several examples. > Just now I want to use hama for some programming purposes, but when I am > trying to start hama I am getting the following: > 2013-09-04 12:22:44,510 INFO org.apache.hadoop.ipc.Client: Retrying connect > to server: hmaster/IP:9000. Already tried 9 time(s). > 2013-09-04 12:22:44,513 ERROR org.apache.hama.bsp.BSPMaster: Can't get > connection to Hadoop Namenode! > java.net.ConnectException: Call to hmaster/IP:9000 failed on connection > exception: java.net.ConnectException: Connection refused > > I am using hadoop-1.0.4 and hama-0.6.2 > > Hama config files are: > hama-site.xml > <configuration> > <property> > <name>bsp.master.address</name> > <value>hmaster:40000</value> > <description>The address of the bsp master server. Either the > literal string "local" or a host:port for distributed mode > </description> > </property> > > <property> > <name>fs.default.name</name> > <value>hdfs://hmaster:9000/</value> > <description> > The name of the default file system. Either the literal string > "local" or a host:port for HDFS. > </description> > </property> > > <property> > <name>hama.zookeeper.quorum</name> > <value>hmaster</value> > <description>Comma separated list of servers in the ZooKeeper Quorum. > For example, "host1.mydomain.com,host2.mydomain.com,host3.mydomain.com > ". > By default this is set to localhost for local and pseudo-distributed > modes > of operation. For a fully-distributed setup, this should be set to a > full > list of ZooKeeper quorum servers. If HAMA_MANAGES_ZK is set in > hama-env.sh > this is the list of servers which we will start/stop zookeeper on. > </description> > </property> > > groomservers > hslave01 //which is the node name > > I will appreciate any help or suggestion to overcome this problem. > > Let me mention that when I am executing /stop-bspd.sh I am getting the > following: > no bspmaster to stop > hslave01: stopping groom > hmaster: stopping zookeeper > > So the groom and zookeeper are working fine. > > > Regards, > Vahe
