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From Yamini Joshi <yamini.1...@gmail.com>
Subject Re: Installing Accumulo in multinode setup
Date Thu, 06 Oct 2016 21:21:02 GMT
1.7.2


Best regards,
Yamini Joshi

On Thu, Oct 6, 2016 at 4:17 PM, Josh Elser <josh.elser@gmail.com> wrote:

> Hrm, maybe I am looking at a newer version of Accumulo than what you're
> using. What version are you on?
>
> Yamini Joshi wrote:
>
>> 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
>> <mailto: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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