more code

source/dnode/vnode/src/tsdb/dev/tsdbCommit.c

@@ -327,7 +327,6 @@ _exit:
   return code;
 }
 
-#if 0
 int32_t tsdbCommitCommit(STsdb *pTsdb) {
   int32_t    code = 0;
   int32_t    lino = 0;
@@ -374,4 +373,3 @@ _exit:
   }
   return code;
 }
\ No newline at end of file
-#endif
\ No newline at end of file

source/dnode/vnode/src/tsdb/dev/tsdbFSet.h

@@ -24,6 +24,13 @@ extern "C" {
 
 /* Exposed Handle */
 struct SFileSet;
+struct SSttFileLayer {
+  int32_t        level;
+  int32_t        nFile;
+  struct STFile *fileList;
+};
+
+#define TSDB_STT_FILE_LEVEL_MAX 3
 
 /* Exposed APIs */
 
@@ -32,7 +39,7 @@ struct SFileSet {
   int32_t              fid;
   int64_t              nextid;
   struct STFile       *files[TSDB_FTYPE_MAX];
-  SRBTree        fsttTree;
+  struct SSttFileLayer sttLayers[TSDB_STT_FILE_LEVEL_MAX];
 };
 
 #ifdef __cplusplus

source/dnode/vnode/src/tsdb/dev/tsdbFileOp.h

@@ -31,7 +31,8 @@ typedef enum {
 
 struct SFileOp {
   EFileOpType   op;
-  // TODO
+  struct STFile oFile;  // old file state
+  struct STFile nFile;  // new file state
 };
 
 /* Exposed APIs */

source/dnode/vnode/src/tsdb/dev/tsdbSttFWriter.c

@@ -22,8 +22,9 @@ extern int32_t tsdbReadFile(STsdbFD *pFD, int64_t offset, uint8_t *pBuf, int64_t
 extern int32_t tsdbFsyncFile(STsdbFD *pFD);
 
 typedef struct {
+  int64_t   prevFooter;
   SFDataPtr dict[4];  // 0:bloom filter, 1:SSttBlk, 2:STbStatisBlk, 3:SDelBlk
-  uint8_t   reserved[32];
+  uint8_t   reserved[24];
 } SFSttFooter;
 
 struct SSttFWriter {