public void setInputFormatZooKeeperInstance(JobConf conf, String instanceName, String zookeepers,
      boolean isSasl) throws IOException {
    try {
      ClientConfiguration clientConf = getClientConfiguration(zookeepers, instanceName, isSasl);
      AccumuloInputFormat.setZooKeeperInstance(conf, clientConf);
    } catch (IllegalStateException ise) {
      // AccumuloInputFormat complains if you re-set an already set value. We just don't care.
      log.debug("Ignoring exception setting ZooKeeper instance of " + instanceName + " at "
          + zookeepers, ise);
    }
  }
Calls {@link AccumuloInputFormat#setZooKeeperInstance(JobConf, ClientConfiguration)},
suppressing exceptions due to setting the configuration multiple times.
accumulo-handler/src/java/org/apache/hadoop/hive/accumulo/HiveAccumuloHelper.java