code: @Test public void getIdTest() throws IOException {
    for (int k=1; k < Constants.MAX_COLUMNS; k+=Constants.MAX_COLUMNS / 5) {
      int fileId=mTfs.createRawTable("/table" + k,1);
      RawTable table=mTfs.getRawTable(fileId);
      Assert.assertEquals(fileId,table.getId());
      table=mTfs.getRawTable("/table" + k);
      Assert.assertEquals(fileId,table.getId());
      fileId=mTfs.createRawTable("/tabl" + k,1,TestUtils.getIncreasingByteBuffer(k % 10));
      table=mTfs.getRawTable(fileId);
      Assert.assertEquals(fileId,table.getId());
      table=mTfs.getRawTable("/tabl" + k);
      Assert.assertEquals(fileId,table.getId());
    }
  }
  