You might have a firewall on the OS you are using (if you are using CentoOS for example, you can try: service iptables stop)
Anastasis On 4 Σεπ 2013, at 12:23 μ.μ., Vahe nr <[email protected]> wrote: > 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 >>> >>> >>
