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From Yamini Joshi <yamini.1...@gmail.com>
Subject Re: Installing Accumulo in multinode setup
Date Thu, 06 Oct 2016 21:05:14 GMT
Thank you for replying Josh.
I am getting this error:
Node does not exist: /tracers

I did ls and saw accumulo there. Should I delete that?
When I try to delete accumulo, it gives me a Authentication is not valid
error.

Best regards,
Yamini Joshi

On Thu, Oct 6, 2016 at 2:57 PM, Josh Elser <josh.elser@gmail.com> wrote:

> Hi Yamini,
>
> The /tracers node in ZooKeeper was likely initialized previously using an
> Accumulo configuration that has a different value for instance.secret. You
> can delete this znode to move forward if you have no other Accumulo
> instance you intend to run on this ZK instance.
>
> $ $ZOOKEEPER_HOME/bin/zkCli.sh -server m4:2181,m5:2181,m6:2181
> > rmr /tracers
>
> You can also set a different value for trace.zookeeper.path in
> accumulo-site.xml. After doing this, you can try running a start-all.sh
> again to start the tracer.
>
> You also mentioned that the Monitor did not start but did not include an
> exception for that service. The error you included only shows that the
> Accumulo Master/TabletServer did not correctly start and assign the system
> tables (accumulo.root and accumulo.metadata).
>
>
> Yamini Joshi wrote:
>
>> Hello all
>>
>> I am trying to configure a multinode cluster with accumulo. I am using 3
>> machines with the config as follows:
>>
>> M4: Hadoop Master/Acc Slave
>> M5: Accumulo Master/Monitor/Gc
>> M6: Slave
>>
>> I have configured zookeeper ensemble on the cluster with all the 3
>> nodes. The Hadoop part seems to work fine, I can see the console and run
>> MR jobs easily. I can also see the zookeeper cluster with M2 as the
>> leader. My problem is with accumulo, after accumulo init:
>> bin/accumulo init
>>   which seems to run without any error, after I isuue the command
>> bin/start-all.sh
>>   the Monitor process can't start. I am getting this error in my tracer
>> log:
>> [start.Main] ERROR: Thread 'tracer' died.
>> org.apache.zookeeper.KeeperException$NoAuthException: KeeperErrorCode =
>> NoAuth for /tracers/trace-
>>      at
>> org.apache.zookeeper.KeeperException.create(KeeperException.java:113)
>>      at org.apache.zookeeper.KeeperException.create(KeeperException.
>> java:51)
>>      at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)
>>      at
>> org.apache.accumulo.fate.zookeeper.ZooUtil.putEphemeralSeque
>> ntial(ZooUtil.java:464)
>>      at
>> org.apache.accumulo.fate.zookeeper.ZooReaderWriter.putEpheme
>> ralSequential(ZooReaderWriter.java:99)
>>      at
>> org.apache.accumulo.tracer.TraceServer.registerInZooKeeper(T
>> raceServer.java:304)
>>      at org.apache.accumulo.tracer.TraceServer.<init>(TraceServer.
>> java:241)
>>      at org.apache.accumulo.tracer.TraceServer.main(TraceServer.java:346)
>>      at
>> org.apache.accumulo.tracer.TracerExecutable.execute(TracerEx
>> ecutable.java:33)
>>      at org.apache.accumulo.start.Main$1.run(Main.java:120)
>>      at java.lang.Thread.run(Thread.java:745)
>>
>> And this in my monitor debug log:
>> Failed to locate tablet for table : !0 row : ~err_\100
>>
>> I can see that the accumulo dir has been created in the HDFS. Can anyone
>> please guide me set this up? I am attaching my config files here (Rest
>> all the same generated as a result of bin_config file).
>>
>> Best regards,
>> Yamini Joshi
>>
>

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