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From Sean Busbey <bus...@cloudera.com>
Subject Re: Connection Refused Reading Instance Id From HDFS
Date Wed, 09 Jul 2014 16:29:17 GMT
can you put your namenode, datanode, and gc logs into a gist?


On Wed, Jul 9, 2014 at 11:20 AM, David Medinets <david.medinets@gmail.com>
wrote:

> I updated my accumulo-env.sh so that Accumulo uses IPV4. And now the shell
> starts, I can create tables and insert entries. I can even view the monitor
> page. However, the logs still show the connection refused error.
>
>
>
>
> On Wed, Jul 9, 2014 at 10:38 AM, Sean Busbey <busbey@cloudera.com> wrote:
>
> > This might be the same ipv6 issue that's causing your monitor failures.
> >
> > --
> > Sean
> > On Jul 9, 2014 9:13 AM, "David Medinets" <david.medinets@gmail.com>
> wrote:
> >
> > > I'm hoping someone has a few minutes to help debug this networking
> issue.
> > > I'm running a single-node Accumulo 1.5.1 instance (using Hadoop 2.4)
> > inside
> > > Docker. I can find the Accumulo instance id manually:
> > >
> > > -bash-4.1# hdfs dfs -ls /accumulo/instance_id
> > > Found 1 items
> > > -rw-r--r--   1 accumulo accumulo          0 2014-07-09 08:22
> > > /accumulo/instance_id/9421cd33-5f37-4f6d-b645-372feb431cae
> > >
> > > But when the gc tries to find the instance id, I see this message in
> the
> > > log file:
> > >
> > > -bash-4.1# cat
> > > /var/log/supervisor/accumulo-gc-stdout---supervisor-nwDCZU.log
> > > 2014-07-09 09:04:07,006 [client.ZooKeeperInstance] ERROR: Problem
> reading
> > > instance id out of hdfs at /accumulo/instance_id
> > > java.net.ConnectException: Call From grail/172.17.0.2 to grail:8020
> > failed
> > > on connection exception: java.net.ConnectException: Connection refused;
> > >
> > > The hostname is 'grail' which resolves to 172.17.0.2 via /etc/hosts and
> > it
> > > can ping itself:
> > >
> > > david@zareason-verix545:~/projects/docker-builds/accumulo$
> > > ./enter_image.sh
> > > grail
> > > -bash-4.1# ping grail
> > > PING grail (172.17.0.2) 56(84) bytes of data.
> > > 64 bytes from grail (172.17.0.2): icmp_seq=1 ttl=64 time=0.083 ms
> > > 64 bytes from grail (172.17.0.2): icmp_seq=2 ttl=64 time=0.054 ms
> > >
> > > Do I need to use IP addresses in the 'gc' and other configuration
> files?
> > >
> > > Any ideas for me to try?
> > >
> > > When the NameNode starts, the log file has no errors. It starts with:
> > >
> > > STARTUP_MSG: Starting NameNode
> > > STARTUP_MSG:   host = grail/172.17.0.2
> > >
> >
>



-- 
Sean

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