Accumulo BatchWriter Ingestion Error

  @Test
  public void AccumuloError() throws Throwable{

    String instanceName = "someInstance";
    String zooServers = "localhost";
    Instance inst = new ZooKeeperInstance(instanceName, zooServers);
    Connector connector = inst.getConnector("someUserName", "somePassword");

    CharSequence rowID = "row1";
    CharSequence colFam = "myColFam";
    CharSequence colQual = "myColQual";
    ColumnVisibility colVis = new ColumnVisibility("");
    long timestamp = System.currentTimeMillis();

    //path to 2005natav3_ei_ca.mdb
    String filePath = "PATH TO FILE";

    File file = new File(filePath);
    ByteBuffer byteBuffer = ByteBuffer.wrap(FileUtils.readFileToByteArray(file));
    Value value = new Value(byteBuffer);

    Mutation mutation = new Mutation(rowID);
    mutation.put(colFam, colQual, colVis, timestamp, value);

    BatchWriter writer = null;
    long memBuf = 1000000L;
    long timeout = 1000L;
    int numThreads = 10;
    String tableName = "someTableName";
    try {
      writer = connector.createBatchWriter(tableName, memBuf, timeout, numThreads);
    } catch (Exception e) {
      e.printStackTrace();
    }

    writer.addMutation(mutation);
    writer.flush();

    writer.close();

  }