Revert "Fixed issue where ConfigNode might recover incorrectly under SimpleConsensus" (#11987)

Author: SpriCoder

iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/consensus/statemachine/ConfigRegionStateMachine.java

@@ -53,13 +53,10 @@
 import java.nio.ByteBuffer;
 import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
-import java.util.Arrays;
-import java.util.Comparator;
 import java.util.Optional;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
-import java.util.regex.Pattern;
 
 /** StateMachine for ConfigRegion. */
 public class ConfigRegionStateMachine implements IStateMachine, IStateMachine.EventApi {
@@ -87,8 +84,6 @@ public class ConfigRegionStateMachine implements IStateMachine, IStateMachine.Ev
   private static final long LOG_FILE_MAX_SIZE =
       CONF.getConfigNodeSimpleConsensusLogSegmentSizeMax();
   private final TEndPoint currentNodeTEndPoint;
-  private static Pattern LOG_INPROGRESS_PATTERN = Pattern.compile("\\d+");
-  private static Pattern LOG_PATTERN = Pattern.compile("(?<=_)(\\d+)$");
 
   public ConfigRegionStateMachine(ConfigManager configManager, ConfigPlanExecutor executor) {
     this.executor = executor;
@@ -328,7 +323,6 @@ private void initStandAloneConfigNode() {
     dir.mkdirs();
     String[] list = new File(CURRENT_FILE_DIR).list();
     if (list != null && list.length != 0) {
-      Arrays.sort(list, new FileComparator());
       for (String logFileName : list) {
         File logFile =
             SystemFileFactory.INSTANCE.getFile(CURRENT_FILE_DIR + File.separator + logFileName);
@@ -401,21 +395,4 @@ private void createLogFile(int endIndex) {
           e);
     }
   }
-
-  static class FileComparator implements Comparator<String> {
-    @Override
-    public int compare(String filename1, String filename2) {
-      long id1 = parseEndIndex(filename1);
-      long id2 = parseEndIndex(filename2);
-      return Long.compare(id1, id2);
-    }
-  }
-
-  static long parseEndIndex(String filename) {
-    if (filename.startsWith("log_inprogress_")) {
-      return Long.parseLong(LOG_INPROGRESS_PATTERN.matcher(filename).group());
-    } else {
-      return Long.parseLong(LOG_PATTERN.matcher(filename).group());
-    }
-  }
 }