diff --git a/server/src/main/java/org/apache/iotdb/db/engine/merge/selector/MaxFileMergeFileSelector.java b/server/src/main/java/org/apache/iotdb/db/engine/merge/selector/MaxFileMergeFileSelector.java
index d115a11afacf486f359cc43760634dc6c59f696f..91049d10f3de8a0b4276caa30734018396330e7c 100644
--- a/server/src/main/java/org/apache/iotdb/db/engine/merge/selector/MaxFileMergeFileSelector.java
+++ b/server/src/main/java/org/apache/iotdb/db/engine/merge/selector/MaxFileMergeFileSelector.java
@@ -316,7 +316,7 @@ public class MaxFileMergeFileSelector implements IMergeFileSelector {
     long singleSeriesCost = calculateTightFileMemoryCost(seqFile, this::calculateMetadataSize);
     long multiSeriesCost = concurrentMergeNum * singleSeriesCost;
     long maxCost = calculateMetadataSize(seqFile);
-    return multiSeriesCost > maxCost ? maxCost : multiSeriesCost;
+    return Math.min(multiSeriesCost, maxCost);
   }
 
   // this method traverses all ChunkMetadata to find out which series has the most chunks and uses
@@ -325,7 +325,7 @@ public class MaxFileMergeFileSelector implements IMergeFileSelector {
     long singleSeriesCost = calculateTightFileMemoryCost(unseqFile, TsFileResource::getTsFileSize);
     long multiSeriesCost = concurrentMergeNum * singleSeriesCost;
     long maxCost = unseqFile.getTsFileSize();
-    return multiSeriesCost > maxCost ? maxCost : multiSeriesCost;
+    return Math.min(multiSeriesCost, maxCost);
   }
 
   @Override
diff --git a/server/src/main/java/org/apache/iotdb/db/engine/merge/task/MergeFileTask.java b/server/src/main/java/org/apache/iotdb/db/engine/merge/task/MergeFileTask.java
index a83c36c619b9225adfed5496024f338f1dff2161..f148655f383f83a25936fcde389e024783b01fdc 100644
--- a/server/src/main/java/org/apache/iotdb/db/engine/merge/task/MergeFileTask.java
+++ b/server/src/main/java/org/apache/iotdb/db/engine/merge/task/MergeFileTask.java
@@ -223,7 +223,7 @@ class MergeFileTask {
         if (metaData.getStartTime() == startTime) {
           Chunk chunk = reader.readMemChunk(metaData);
           fileWriter.writeChunk(chunk, metaData);
-          maxVersion = metaData.getVersion() > maxVersion ? metaData.getVersion() : maxVersion;
+          maxVersion = Math.max(metaData.getVersion(), maxVersion);
           context.incTotalPointWritten(metaData.getNumOfPoints());
           break;
         }
diff --git a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/BinaryTVList.java b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/BinaryTVList.java
index 00d55f8293097c47f70b2f278de88062bd8dc440..bb61d933720792184ef6562112452ef102c54e86 100644
--- a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/BinaryTVList.java
+++ b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/BinaryTVList.java
@@ -47,7 +47,7 @@ public class BinaryTVList extends TVList {
     checkExpansion();
     int arrayIndex = size / ARRAY_SIZE;
     int elementIndex = size % ARRAY_SIZE;
-    minTime = minTime <= timestamp ? minTime : timestamp;
+    minTime = Math.min(minTime, timestamp);
     timestamps.get(arrayIndex)[elementIndex] = timestamp;
     values.get(arrayIndex)[elementIndex] = value;
     size++;
diff --git a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/BooleanTVList.java b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/BooleanTVList.java
index c6389652a7a72dc12f54e4b5f4e80731dee29d73..f199ecde0eb2433ee2372919b14ad33b901c5045 100644
--- a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/BooleanTVList.java
+++ b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/BooleanTVList.java
@@ -46,7 +46,7 @@ public class BooleanTVList extends TVList {
     checkExpansion();
     int arrayIndex = size / ARRAY_SIZE;
     int elementIndex = size % ARRAY_SIZE;
-    minTime = minTime <= timestamp ? minTime : timestamp;
+    minTime = Math.min(minTime, timestamp);
     timestamps.get(arrayIndex)[elementIndex] = timestamp;
     values.get(arrayIndex)[elementIndex] = value;
     size++;
diff --git a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/DoubleTVList.java b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/DoubleTVList.java
index b0025009d16d5ba1d76c2a26f03ea5029bdcb6e7..f76890bbba2cb2797d8d790eb9d186d05336ccd2 100644
--- a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/DoubleTVList.java
+++ b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/DoubleTVList.java
@@ -47,7 +47,7 @@ public class DoubleTVList extends TVList {
     checkExpansion();
     int arrayIndex = size / ARRAY_SIZE;
     int elementIndex = size % ARRAY_SIZE;
-    minTime = minTime <= timestamp ? minTime : timestamp;
+    minTime = Math.min(minTime, timestamp);
     timestamps.get(arrayIndex)[elementIndex] = timestamp;
     values.get(arrayIndex)[elementIndex] = value;
     size++;
diff --git a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/FloatTVList.java b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/FloatTVList.java
index 39ebc53eab0e87bec3cfec0040e37bf1d795a3c1..5e16e56bdd9b4f4cef2bdfdb16faa52fc69cc2ca 100644
--- a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/FloatTVList.java
+++ b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/FloatTVList.java
@@ -48,7 +48,7 @@ public class FloatTVList extends TVList {
     checkExpansion();
     int arrayIndex = size / ARRAY_SIZE;
     int elementIndex = size % ARRAY_SIZE;
-    minTime = minTime <= timestamp ? minTime : timestamp;
+    minTime = Math.min(minTime, timestamp);
     timestamps.get(arrayIndex)[elementIndex] = timestamp;
     values.get(arrayIndex)[elementIndex] = value;
     size++;
diff --git a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/IntTVList.java b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/IntTVList.java
index c89c33dffa1d670e0a500ceb86eb3f8d10cfd324..7667d2b45320f60961b6d1be19032154873bfda7 100644
--- a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/IntTVList.java
+++ b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/IntTVList.java
@@ -46,7 +46,7 @@ public class IntTVList extends TVList {
     checkExpansion();
     int arrayIndex = size / ARRAY_SIZE;
     int elementIndex = size % ARRAY_SIZE;
-    minTime = minTime <= timestamp ? minTime : timestamp;
+    minTime = Math.min(minTime, timestamp);
     timestamps.get(arrayIndex)[elementIndex] = timestamp;
     values.get(arrayIndex)[elementIndex] = value;
     size++;
diff --git a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/LongTVList.java b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/LongTVList.java
index def63f2be4f7f2500cb753b31e9842f8b1bcc491..f1d5b6215b960f2686f201905024c23b40d8032f 100644
--- a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/LongTVList.java
+++ b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/LongTVList.java
@@ -46,7 +46,7 @@ public class LongTVList extends TVList {
     checkExpansion();
     int arrayIndex = size / ARRAY_SIZE;
     int elementIndex = size % ARRAY_SIZE;
-    minTime = minTime <= timestamp ? minTime : timestamp;
+    minTime = Math.min(minTime, timestamp);
     timestamps.get(arrayIndex)[elementIndex] = timestamp;
     values.get(arrayIndex)[elementIndex] = value;
     size++;
diff --git a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/TVList.java b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/TVList.java
index a93a4b5f2fbf8ec7ece165c2e3f9a2458d8710ff..18e71763a4cc1b0f50f8aa2f0250bed4c794e344 100644
--- a/server/src/main/java/org/apache/iotdb/db/utils/datastructure/TVList.java
+++ b/server/src/main/java/org/apache/iotdb/db/utils/datastructure/TVList.java
@@ -187,7 +187,7 @@ public abstract class TVList {
       long time = getTime(i);
       if (time < lowerBound || time > upperBound) {
         set(i, newSize++);
-        minTime = time < minTime ? time : minTime;
+        minTime = Math.min(time, minTime);
       }
     }
     int deletedNumber = size - newSize;
@@ -245,7 +245,7 @@ public abstract class TVList {
   abstract void clearValue();
 
   /**
-   * The arrays for sorting are not including in write memory now, 
+   * The arrays for sorting are not including in write memory now,
    * the memory usage is considered as temporary memory.
    */
   abstract void clearSortedValue();
@@ -452,12 +452,12 @@ public abstract class TVList {
     long inPutMinTime = Long.MAX_VALUE;
     boolean inputSorted = true;
     for (int i = start; i < end; i++) {
-      inPutMinTime = inPutMinTime <= time[i] ? inPutMinTime : time[i];
+      inPutMinTime = Math.min(inPutMinTime, time[i]);
       if (inputSorted && i < length - 1 && time[i] > time[i + 1]) {
         inputSorted = false;
       }
     }
-    minTime = inPutMinTime < minTime ? inPutMinTime : minTime;
+    minTime = Math.min(inPutMinTime, minTime);
     sorted = sorted && inputSorted && (size == 0 || inPutMinTime >= getTime(size - 1));
   }
 
diff --git a/tsfile/src/main/java/org/apache/iotdb/tsfile/utils/ReadWriteForEncodingUtils.java b/tsfile/src/main/java/org/apache/iotdb/tsfile/utils/ReadWriteForEncodingUtils.java
index 60b8917fbff88dedcccb7a9396a1d15a2f9b12ce..0b1f8b0c5474060fb983e654cca6a1ec04445c0c 100644
--- a/tsfile/src/main/java/org/apache/iotdb/tsfile/utils/ReadWriteForEncodingUtils.java
+++ b/tsfile/src/main/java/org/apache/iotdb/tsfile/utils/ReadWriteForEncodingUtils.java
@@ -44,7 +44,7 @@ public class ReadWriteForEncodingUtils {
     int max = 1;
     for (int num : list) {
       int bitWidth = 32 - Integer.numberOfLeadingZeros(num);
-      max = bitWidth > max ? bitWidth : max;
+      max = Math.max(bitWidth, max);
     }
     return max;
   }
@@ -59,7 +59,7 @@ public class ReadWriteForEncodingUtils {
     int max = 1;
     for (long num : list) {
       int bitWidth = 64 - Long.numberOfLeadingZeros(num);
-      max = bitWidth > max ? bitWidth : max;
+      max = Math.max(bitWidth, max);
     }
     return max;
   }