private void simulateFileScenario02() throws IllegalPathException {
    InsertRowNode insertRowNode = getInsertRowNode(devicePath);
    // _0-0-0.wal
    walNode.log(0, insertRowNode); // -1
    walNode.log(0, insertRowNode); // -1
    walNode.rollWALFile();
    // _1-0-0.wal
    walNode.log(0, insertRowNode); // -1
    walNode.rollWALFile();
    // _2-0-1.wal
    walNode.log(0, insertRowNode); // -1
    DeleteDataNode deleteDataNode = getDeleteDataNode(devicePath);
    deleteDataNode.setSearchIndex(1);
    walNode.log(0, deleteDataNode); // 1
    walNode.rollWALFile();
    // _3-1-0.wal
    walNode.log(0, insertRowNode); // -1
  }
Generate wal files as below: <br>
_0-0-0.wal: -1,-1 <br>
_1-0-0.wal: -1 <br>
_2-0-1.wal: -1,1 <br>
_3-1-0.wal: -1 <br>
1 - DeleteDataNode
iotdb-core/datanode/src/test/java/org/apache/iotdb/db/storageengine/dataregion/wal/node/ConsensusReqReaderTest.java