public void setOutputFormatMockInstance(JobConf conf, String instanceName) {
    try {
      AccumuloOutputFormat.setMockInstance(conf, instanceName);
    } catch (IllegalStateException e) {
      // AccumuloOutputFormat complains if you re-set an already set value. We just don't care.
      log.debug("Ignoring exception setting mock instance of " + instanceName, e);
    }
  }
Calls {@link AccumuloOutputFormat#setMockInstance(JobConf, String)}, suppressing exceptions
due to setting the configuration multiple times.
accumulo-handler/src/java/org/apache/hadoop/hive/accumulo/HiveAccumuloHelper.java