Re: Modifying VisibilityEvaluator - Problem with Classpath for scanner

[ivan bella]

Jim,

  All on one machine implies that you only have one $ACCUMULO_HOME/lib/ext directory.  It would not matter if you are running multiple tservers on that machine.  As Mike suggested, using $ACCUMULO_HOME/bin/accumulo classpath would help eliminate whether this is a classpath issue vs a class initialization issue.  Another possible source of issues would be if you have multiple of the same class on the classpath (different jars with the same class).

Regards,

   Ivan

On July 31, 2017 at 10:30 AM o haya <oh...@yahoo.com> wrote:

Hi Ivan,

My Accumulo configuration is with everything on a single machine. Would that matter (would I have more than one tserver?)?

My situation is like "whack-a-mole" (that's the game where you hit a mole with a hammer and another one pops up). What I mean is it seems like I restart Accumulo (bin/stop-all.sh then bin/start-all.sh) and one time I get one class that is not found, then the next time it seems like a different class is not found. Really frustrating.

So far, as I said, I have put the JARs in lib/ext AND added them to the accumulo-site.xml :(... I gave up last night and shut all down and will try again later today.

Thanks,
Jim

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On Mon, 7/31/17, ivan bella <i...@ivan.bella.name> wrote:

Subject: Re: Modifying VisibilityEvaluator - Problem with Classpath for scanner
To: user@accumulo.apache.org, "o haya" <oh...@yahoo.com>
Date: Monday, July 31, 2017, 8:33 AM

Jim,
Putting the jars in the lib/ext directory is
a perfectly acceptable mechanism. Make sure your jars are
in place on all of your tservers before you start them up.
Perhaps this class is being found but is failing to
initialize itself which can lead to a ClassNoDefError.
Ivan

On July
31, 2017 at 2:39 AM o haya <oh...@yahoo.com> wrote:

Hi,

I am trying to make some modifications to
the Accumulo VisibilityModifier, but when I add my code, and
try to run a scan on a table, I am getting ClassNoDefError
for a class that my modified code uses.

So far, what I have been trying to add
my JARs to the classpath is to put the JARs in the Accumulo
lib/ext directory AND also, editing the accumulo-site.xml
and adding the same JARs to that file.

Is there somewhere
else I need to configure or do I need to put the JAR in
somewhere other than the lib/ext directory?

Thanks,
Jim