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Date: Wed, 9 Jul 2014 12:43:29 -0400
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Subject: Re: Connection Refused Reading Instance Id From HDFS
From: David Medinets <david.medinets@gmail.com>
To: accumulo-dev <dev@accumulo.apache.org>
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I see the same connection refused message in master, monitor, tserver, and
gc logs. Maybe it's a coordination issue where one process takes a bit of
time to fully start?

GIST of ./make_image.sh
https://gist.github.com/medined/c1677c278bd72cd2ee64

$ ./make_container.sh grail grail
db73a147ef89a683435475ac9fcba7ef31219710e39759afd87b0742f6cc7490

GIST of file diff from base image
https://gist.github.com/medined/fe7d04bd4aaa902a66ed

Use ./enter_image.sh grail to investigate container

GIST of namenode log
https://gist.github.com/medined/46ce499603d75888a118

GIST of datanode log
https://gist.github.com/medined/1e99bb6db3466427013d

GIST of accumulo gc log
https://gist.github.com/medined/c1abf7eaee876057e38f


On Wed, Jul 9, 2014 at 12:29 PM, Sean Busbey <busbey@cloudera.com> wrote:

> 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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