Hi, Let me add that the two machines (namenode and datanode) are virtual machines with local ips and there is no firewall between them. Do I need to put the Hadoop conf file also to be more clear.
Regards, Vahe On Wed, Sep 4, 2013 at 8:59 AM, Vahe nr <[email protected]> wrote: > Thanks Anastasis for your response. > > The ping is ok from Hama server to Namenode which is actually the same > server. But you are right I need to check the firewall. > > Regards, > Vahe > > > On Wed, Sep 4, 2013 at 8:53 AM, Anastasis Andronidis < > [email protected]> wrote: > >> 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 >> >> >
