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Date: Thu, 1 Sep 2016 18:09:20 +0000 (UTC)
From: "Sean Busbey (JIRA)" <jira@apache.org>
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Subject: [jira] [Created] (ACCUMULO-4444) NullPointerException when password
 not given to TraceTableStats
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archived-at: Thu, 01 Sep 2016 18:09:22 -0000

Sean Busbey created ACCUMULO-4444:
-------------------------------------

             Summary: NullPointerException when password not given to TraceTableStats
                 Key: ACCUMULO-4444
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4444
             Project: Accumulo
          Issue Type: Bug
          Components: trace
    Affects Versions: 1.7.2
         Environment: 1.7.2 cluster
            Reporter: Sean Busbey
            Priority: Critical


I'm trying to follow the [admin guide on tracing|https://accumulo.apache.org/1.7/accumulo_user_manual#_viewing_collected_traces], specifically with the {{TraceTableStats}} command.

In attempting to get prompted for the password, I provided a username and no password, which resulted in a NullPointerException.

{code}
$ accumulo org.apache.accumulo.tracer.TraceTableStats -i accumulo -u foobar
2016-09-01 11:05:47,420 [conf.ConfigSanityCheck] WARN : Use of instance.dfs.uri and instance.dfs.dir are deprecated. Consider using instance.volumes instead.
2016-09-01 11:05:47,564 [client.ClientConfiguration] WARN : Found no client.conf in default paths. Using default client configuration values.
2016-09-01 11:05:47,567 [client.ClientConfiguration] WARN : Found no client.conf in default paths. Using default client configuration values.
2016-09-01 11:05:47,720 [start.Main] ERROR: Thread 'org.apache.accumulo.tracer.TraceTableStats' died.
java.lang.NullPointerException
        at org.apache.accumulo.core.client.impl.ConnectorImpl.<init>(ConnectorImpl.java:59)
        at org.apache.accumulo.core.client.ZooKeeperInstance.getConnector(ZooKeeperInstance.java:248)
        at org.apache.accumulo.core.cli.ClientOpts.getConnector(ClientOpts.java:315)
        at org.apache.accumulo.tracer.TraceTableStats.count(TraceTableStats.java:75)
        at org.apache.accumulo.tracer.TraceTableStats.main(TraceTableStats.java:71)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at org.apache.accumulo.start.Main$2.run(Main.java:157)
        at java.lang.Thread.run(Thread.java:745)

{code}

The impacted line is checking to see if the credential has expired, without checking to see if there is a credential in the first place, I think?

{code}
57  public ConnectorImpl(final ClientContext context) throws AccumuloException, AccumuloSecurityException {
58    checkArgument(context != null, "context is null");
59    if (context.getCredentials().getToken().isDestroyed())
60      throw new AccumuloSecurityException(context.getCredentials().getPrincipal(), SecurityErrorCode.TOKEN_EXPIRED);
{code}



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