[to dev/1.3] fix: bitmap error

Author: CritasWang

src/Apache.IoTDB/DataStructure/BitMap.cs

@@ -23,7 +23,7 @@
 #endif
 public class BitMap
 {
-    private static byte[] BIT_UTIL = new byte[] { 1, 2, 4, 8, 16, 32, 64, 255 };
+    private static byte[] BIT_UTIL = new byte[] { 1, 2, 4, 8, 16, 32, 64, unchecked((byte)-128) };
     private static byte[] UNMARK_BIT_UTIL =
       new byte[] {
         (byte) 0XFE, // 11111110
@@ -94,7 +94,7 @@ public void mark(int position)
     public void reset()
     {
 #if NET461_OR_GREATER || NETSTANDARD2_0
-        bits.Fill((byte)0xFF);
+        bits.Fill((byte)0);
 #else
         Array.Fill(bits, (byte)0);
 #endif

src/Apache.IoTDB/DataStructure/Tablet.cs

@@ -44,6 +44,8 @@ namespace Apache.IoTDB.DataStructure
     */
     public class Tablet
     {
+
+        private static int EMPTY_DATE_INT = 10000101;
         private readonly List<long> _timestamps;
         private readonly List<List<object>> _values;
 
@@ -361,7 +363,7 @@ public byte[] GetBinaryValues()
                             for (int j = 0; j < RowNumber; j++)
                             {
                                 var value = _values[j][i];
-                                buffer.AddInt(value != null ? Utils.ParseDateToInt((DateTime)value) : int.MinValue);
+                                buffer.AddInt(value != null ? Utils.ParseDateToInt((DateTime)value) : EMPTY_DATE_INT);
                             }
                             break;
                         }