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From "Cornish, Duane C." <>
Subject Intermittent error connecting to Accumulo Instance
Date Tue, 11 Sep 2012 21:25:31 GMT
I stood up a 4 node Accumulo Cloud.  I wrote a Java interface to it and when I attempt to connect
to the table through my interface, I'm getting an intermittent error that only pops up maybe
1 out of every 5 runs of the code.  I have zookeeper running on all 4 nodes but in my accumulo
config file, I only mentioned the one on the Accumulo name node.  I don't know if that would
be a problem or not.  Also, the zookeeper stuff is all owned by root, while hadoop and Accumulo
are owned by a different non-root user.  I built this cluster from the ground up (i.e. didn't
use Cloudera, etc.), so it's possible that I missed something.

I'm running Accumulo 1.4.1 with hadoop 1.0.3 and zookeeper 3.3.6.

As you can see from the error below, it is saying that I have an INVALID_INSTANCEID.  However
my instance (and credentials) are static final Strings and are not changing.  I haven't had
any trouble connecting to the instance via the shell.  Also, the monitor webpage works just
fine and shows no errors.

Here is the error below:

Exception in thread "main" org.apache.accumulo.core.client.AccumuloSecurityException: Error
INVALID_INSTANCEID - Unknown security exception
                at org.apache.accumulo.core.client.impl.ServerClient.execute(
                at org.apache.accumulo.core.client.impl.ConnectorImpl.<init>(
                at org.apache.accumulo.core.client.ZooKeeperInstance.getConnector(
                at jhuapl.redd.coremax.shared.accumuloInterface.AccumuloConnector.deleteTable(
                at jhuapl.redd.coremax.shared.accumuloInterface.TestAccumuloInterface.main(
Caused by: ThriftSecurityException(user:root, code:INVALID_INSTANCEID)
                at org.apache.accumulo.core.client.impl.thrift.ClientService$
                at org.apache.accumulo.core.client.impl.thrift.ClientService$Client.recv_authenticateUser(
                at org.apache.accumulo.core.client.impl.thrift.ClientService$Client.authenticateUser(
                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                at sun.reflect.NativeMethodAccessorImpl.invoke(
                at sun.reflect.DelegatingMethodAccessorImpl.invoke(
                at java.lang.reflect.Method.invoke(
                at org.apache.accumulo.cloudtrace.instrument.thrift.TraceWrap$2.invoke(
                at $Proxy0.authenticateUser(Unknown Source)
                at org.apache.accumulo.core.client.impl.ConnectorImpl$1.execute(
                at org.apache.accumulo.core.client.impl.ConnectorImpl$1.execute(
                at org.apache.accumulo.core.client.impl.ServerClient.executeRaw(
                at org.apache.accumulo.core.client.impl.ServerClient.execute(
                ... 4 more

Any help would be greatly appreciated!

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