Sat Jul 20 14:20:10 CST 2019 Source Update...

Source/core/db/block-db.js

@@ -360,7 +360,7 @@ module.exports = class CDB extends require("../code")
     {
         var BufWrite, FileItem, written;
         var BlockNum = Math.trunc(Block.BlockNum);
-        this.ClearBufMap()
+        this.TruncateBufMap(BlockNum)
         Block.VersionDB = global.DB_VERSION
         BufWrite = BufLib.GetBufferFromObject(Block, FORMAT_STREAM_HEADER, 200, WorkStructStreamHeader)
         FileItem = BlockDB.OpenDBFile(FILE_NAME_BODY, 1)
@@ -401,7 +401,7 @@ module.exports = class CDB extends require("../code")
     WriteBufHeaderToFile1(BufWrite, BlockNum)
     {
         BlockNum = Math.trunc(BlockNum)
-        this.ClearBufMap()
+        this.TruncateBufMap(BlockNum)
         var FileItem = BlockDB.OpenDBFile(FILE_NAME_HEADER, 1);
         var Position = BlockNum * BLOCK_HEADER_SIZE;
         var written = fs.writeSync(FileItem.fd, BufWrite, 0, BufWrite.length, Position);
@@ -578,6 +578,19 @@ module.exports = class CDB extends require("../code")
         Block.Prepared = true
         return this.PrepareBlockFields(Block, BlockNum);
     }
+    ClearBufMap()
+    {
+        this.MapHeader = {}
+    }
+    TruncateBufMap(BlockNum)
+    {
+        if(BlockNum % 10000 === 0)
+            this.ClearBufMap()
+        else
+        {
+            delete this.MapHeader[BlockNum]
+        }
+    }
     ReadBlockHeaderFromMapDB(BlockNum)
     {
         var Block = this.MapHeader[BlockNum];
@@ -586,6 +599,10 @@ module.exports = class CDB extends require("../code")
             Block = this.ReadBlockHeaderDB(BlockNum)
             this.MapHeader[BlockNum] = Block
         }
+        else
+        {
+            Block.FromMap = 1
+        }
         return Block;
     }
     SetTruncateBlockDB(BlockNum)
@@ -659,10 +676,6 @@ module.exports = class CDB extends require("../code")
         this.CreateGenesisBlocks()
         this.StartSyncBlockchain()
     }
-    ClearBufMap()
-    {
-        this.MapHeader = {}
-    }
     Close()
     {
         this.ClearBufMap()