@Test
  public void scenario01TestGetReqIterator06() throws Exception {
    simulateFileScenario01();
    ConsensusReqReader.ReqIterator iterator = walNode.getReqIterator(5);
    Assert.assertFalse(iterator.hasNext());
  }
Generate wal files as below: <br>
_0-0-1.wal: 1,-1 <br>
_1-1-1.wal: 2,2,2 <br>
_2-2-1.wal: 3,3 <br>
_3-3-1.wal: 3,4 <br>
_4-4-1.wal: 4 <br>
_5-4-1.wal: 4,4,5 <br>
_6-5-1.wal: 6 <br>
1 - InsertRowNode, 2 - InsertRowsOfOneDeviceNode, 3 - InsertRowsNode, 4 -
InsertMultiTabletsNode, 5 - InsertTabletNode, 6 - InsertRowNode
iotdb-core/datanode/src/test/java/org/apache/iotdb/db/storageengine/dataregion/wal/node/ConsensusReqReaderTest.java