private NewPartitionedEvent constructNewPE() {
    NewPartitionedEvent pe = new NewPartitionedEvent();
    pe.setStreamId("testStreamId");
    pe.setTimestamp(1463159382000L);
    pe.setData(data);

    pe.setType(StreamPartition.Type.GROUPBY);
    List<String> col = new ArrayList<>();
    col.add("host");
    pe.setColumns(col);
    pe.setPartitionKey(1000);

    pe.setWindowMargin(30000);
    pe.setWindowPeriod("PT1M");
    return pe;
  }