Already did that. Connection was rejected. On Fri, Aug 10, 2012 at 2:24 PM, Joey Echeverria <j...@cloudera.com> wrote:
> Try: > > $ telnet pnjhadoopnn01 50070 > > -Joey > > On Fri, Aug 10, 2012 at 1:10 PM, Jian Fang > <jian.fang.subscr...@gmail.com> wrote: > > Here is the property in hdfs-site.xml > > > > <property> > > <name>dfs.http.address</name> > > <value>pnjhadoopnn01:50070</value> > > </property> > > > > Thanks, > > > > Jian > > > > > > On Fri, Aug 10, 2012 at 11:46 AM, Harsh J <ha...@cloudera.com> wrote: > >> > >> Yes the test was to figure out if there really was a listener on > >> 50070. Can you check the hdfs-site.xml on the NN machine for what its > >> dfs.http.address may really be using for its port? > >> > >> On Fri, Aug 10, 2012 at 7:48 PM, Jian Fang > >> <jian.fang.subscr...@gmail.com> wrote: > >> > Hi Harsh, > >> > > >> > Seems the -p requires the root privilege, which I don't have. I run > >> > "netstat -a | grep 50070", but did not get back anything. As I said, > >> > telnet > >> > did not work either. > >> > > >> > [hadoop@pnjhadoopnn01 ~]$ telnet pnjhadoopnn01 50070 > >> > Trying xx.xx.xx.xx... > >> > telnet: connect to address xx.xx.xx.xx: Connection refused > >> > telnet: Unable to connect to remote host: Connection refused > >> > > >> > [hadoop@pnjhadoopnn01 ~]$ telnet localhost 50070 > >> > Trying 127.0.0.1... > >> > telnet: connect to address 127.0.0.1: Connection refused > >> > telnet: Unable to connect to remote host: Connection refused > >> > > >> > Thanks, > >> > > >> > Jian > >> > > >> > On Fri, Aug 10, 2012 at 1:50 AM, Harsh J <ha...@cloudera.com> wrote: > >> >> > >> >> Jian, > >> >> > >> >> From your NN, can you get us the output "netstat -anp | grep 50070"? > >> >> > >> >> On Fri, Aug 10, 2012 at 9:29 AM, Jian Fang > >> >> <jian.fang.subscr...@gmail.com> wrote: > >> >> > Thanks Harsh. But there is no firewall there, the two clusters are > on > >> >> > the > >> >> > same networks. I cannot telnet to the port even on the same > machine. > >> >> > > >> >> > > >> >> > On Thu, Aug 9, 2012 at 6:00 PM, Harsh J <ha...@cloudera.com> > wrote: > >> >> >> > >> >> >> Hi Jian, > >> >> >> > >> >> >> HFTP is always-on by default. Can you check and make sure that the > >> >> >> firewall isn't the cause of the connection refused on port 50070 > on > >> >> >> the NN and ports 50075 on the DNs here? > >> >> >> > >> >> >> On Fri, Aug 10, 2012 at 1:47 AM, Jian Fang > >> >> >> <jian.fang.subscr...@gmail.com> wrote: > >> >> >> > Hi, > >> >> >> > > >> >> >> > We have a hadoop cluster of version 0.20.2 in production. Now we > >> >> >> > have > >> >> >> > another new Hadoop cluster using cloudera's CDH3U4. We like to > run > >> >> >> > distcp to > >> >> >> > copy files between the two clusters. Since the hadoop versions > are > >> >> >> > different, we have to use hftp protocol to copy files based on > the > >> >> >> > hadoop > >> >> >> > document here: > >> >> >> > http://hadoop.apache.org/common/docs/r0.20.2/distcp.html#cpver. > >> >> >> > > >> >> >> > The problem is that I cannot access files via hftp from the > >> >> >> > current > >> >> >> > production 0.20.2 cluster even though I can see the following > >> >> >> > setting > >> >> >> > from > >> >> >> > job tracker UI. > >> >> >> > > >> >> >> > dfs.http.address pnjhadoopnn01:50070 > >> >> >> > > >> >> >> > I tried to telnet this port, but got "connection refused" error. > >> >> >> > Seems > >> >> >> > the > >> >> >> > hftp service is not actually running. Could someone tell me how > to > >> >> >> > enable > >> >> >> > the hftp service in the 0.20.2 hadoop cluster so that I can run > >> >> >> > distcp? > >> >> >> > > >> >> >> > Thanks in advance, > >> >> >> > > >> >> >> > John > >> >> >> > >> >> >> > >> >> >> > >> >> >> -- > >> >> >> Harsh J > >> >> > > >> >> > > >> >> > >> >> > >> >> > >> >> -- > >> >> Harsh J > >> > > >> > > >> > >> > >> > >> -- > >> Harsh J > > > > > > > > -- > Joey Echeverria > Principal Solutions Architect > Cloudera, Inc. >
