enh: rotate wal of mnode properly

source/dnode/mnode/impl/src/mndMain.c

@@ -344,8 +344,8 @@ static int32_t mndInitWal(SMnode *pMnode) {
       .fsyncPeriod = 0,
       .rollPeriod = -1,
       .segSize = -1,
-      .retentionPeriod = -1,
-      .retentionSize = -1,
+      .retentionPeriod = 0,
+      .retentionSize = 0,
       .level = TAOS_WAL_FSYNC,
   };
 
@@ -370,7 +370,6 @@ static int32_t mndInitSdb(SMnode *pMnode) {
   opt.path = pMnode->path;
   opt.pMnode = pMnode;
   opt.pWal = pMnode->pWal;
-  opt.sync = pMnode->syncMgmt.sync;
 
   pMnode->pSdb = sdbInit(&opt);
   if (pMnode->pSdb == NULL) {
@@ -552,16 +551,7 @@ void mndPreClose(SMnode *pMnode) {
   if (pMnode != NULL) {
     syncLeaderTransfer(pMnode->syncMgmt.sync);
     syncPreStop(pMnode->syncMgmt.sync);
-#if 0
-    while (syncSnapshotRecving(pMnode->syncMgmt.sync)) {
-      mInfo("vgId:1, snapshot is recving");
-      taosMsleep(300);
-    }
-    while (syncSnapshotSending(pMnode->syncMgmt.sync)) {
-      mInfo("vgId:1, snapshot is sending");
-      taosMsleep(300);
-    }
-#endif
+    sdbWriteFile(pMnode->pSdb, 0);
   }
 }
 

source/dnode/mnode/impl/src/mndSync.c

@@ -118,12 +118,12 @@ int32_t mndProcessWriteMsg(const SSyncFSM *pFsm, SRpcMsg *pMsg, const SFsmCbMeta
             transId, pTrans->createdTime, pMgmt->transId);
       mndTransExecute(pMnode, pTrans, false);
       mndReleaseTrans(pMnode, pTrans);
-      // sdbWriteFile(pMnode->pSdb, SDB_WRITE_DELTA);
     } else {
       mError("trans:%d, not found while execute in mnode since %s", transId, terrstr());
     }
   }
 
+  sdbWriteFile(pMnode->pSdb, SDB_WRITE_DELTA);
   return 0;
 }
 
@@ -319,6 +319,7 @@ int32_t mndInitSync(SMnode *pMnode) {
     mError("failed to open sync since %s", terrstr());
     return -1;
   }
+  pMnode->pSdb->sync = pMgmt->sync;
 
   mInfo("mnode-sync is opened, id:%" PRId64, pMgmt->sync);
   return 0;

source/dnode/mnode/impl/src/mndTrans.c

@@ -1645,8 +1645,6 @@ void mndTransPullup(SMnode *pMnode) {
     }
     mndReleaseTrans(pMnode, pTrans);
   }
-
-  sdbWriteFile(pMnode->pSdb, SDB_WRITE_DELTA);
   taosArrayDestroy(pArray);
 }
 

source/dnode/mnode/sdb/inc/sdb.h

@@ -37,7 +37,7 @@ extern "C" {
 #define mTrace(...) { if (mDebugFlag & DEBUG_TRACE) { taosPrintLog("MND ", DEBUG_TRACE, mDebugFlag, __VA_ARGS__); }}
 // clang-format on
 
-#define SDB_WRITE_DELTA 20
+#define SDB_WRITE_DELTA 2000
 
 #define SDB_GET_VAL(pData, dataPos, val, pos, func, type) \
   {                                                       \

source/dnode/mnode/sdb/src/sdb.c

@@ -53,7 +53,6 @@ SSdb *sdbInit(SSdbOpt *pOption) {
   }
 
   pSdb->pWal = pOption->pWal;
-  pSdb->sync = pOption->sync;
   pSdb->applyIndex = -1;
   pSdb->applyTerm = -1;
   pSdb->applyConfig = -1;

source/dnode/mnode/sdb/src/sdbFile.c

@@ -472,10 +472,7 @@ int32_t sdbWriteFile(SSdb *pSdb, int32_t delta) {
 
   taosThreadMutexLock(&pSdb->filelock);
   if (pSdb->pWal != NULL) {
-    // code = walBeginSnapshot(pSdb->pWal, pSdb->applyIndex, 0);
-    if (pSdb->sync == 0) {
-      code = 0;
-    } else {
+    if (pSdb->sync > 0) {
       code = syncBeginSnapshot(pSdb->sync, pSdb->applyIndex);
     }
   }
@@ -484,11 +481,7 @@ int32_t sdbWriteFile(SSdb *pSdb, int32_t delta) {
   }
   if (code == 0) {
     if (pSdb->pWal != NULL) {
-      // code = walEndSnapshot(pSdb->pWal);
-
-      if (pSdb->sync == 0) {
-        code = 0;
-      } else {
+      if (pSdb->sync > 0) {
         code = syncEndSnapshot(pSdb->sync);
       }
     }