enh(tdb): new interface of meta prep async commit

source/dnode/vnode/src/inc/vnodeInt.h

@@ -102,6 +102,7 @@ int             metaClose(SMeta* pMeta);
 int             metaBegin(SMeta* pMeta, int8_t fromSys);
 int             metaCommit(SMeta* pMeta);
 int             metaFinishCommit(SMeta* pMeta);
+int             metaPrepareAsyncCommit(SMeta* pMeta);
 int             metaCreateSTable(SMeta* pMeta, int64_t version, SVCreateStbReq* pReq);
 int             metaAlterSTable(SMeta* pMeta, int64_t version, SVCreateStbReq* pReq);
 int             metaDropSTable(SMeta* pMeta, int64_t verison, SVDropStbReq* pReq, SArray* tbUidList);

source/dnode/vnode/src/meta/metaCommit.c

@@ -35,6 +35,7 @@ int metaBegin(SMeta *pMeta, int8_t fromSys) {
 // commit the meta txn
 int metaCommit(SMeta *pMeta) { return tdbCommit(pMeta->pEnv, &pMeta->txn); }
 int metaFinishCommit(SMeta *pMeta) { return tdbPostCommit(pMeta->pEnv, &pMeta->txn); }
+int metaPrepareAsyncCommit(SMeta *pMeta) { return tdbPrepareAsyncCommit(pMeta->pEnv, &pMeta->txn); }
 
 // abort the meta txn
 int metaAbort(SMeta *pMeta) { return tdbAbort(pMeta->pEnv, &pMeta->txn); }

source/libs/tdb/inc/tdb.h

@@ -36,6 +36,7 @@ int32_t tdbClose(TDB *pDb);
 int32_t tdbBegin(TDB *pDb, TXN *pTxn);
 int32_t tdbCommit(TDB *pDb, TXN *pTxn);
 int32_t tdbPostCommit(TDB *pDb, TXN *pTxn);
+int32_t tdbPrepareAsyncCommit(TDB *pDb, TXN *pTxn);
 int32_t tdbAbort(TDB *pDb, TXN *pTxn);
 int32_t tdbAlter(TDB *pDb, int pages);
 

source/libs/tdb/src/db/tdbDb.c

@@ -138,7 +138,24 @@ int32_t tdbPostCommit(TDB *pDb, TXN *pTxn) {
   for (pPager = pDb->pgrList; pPager; pPager = pPager->pNext) {
     ret = tdbPagerPostCommit(pPager, pTxn);
     if (ret < 0) {
-      tdbError("failed to commit pager since %s. dbName:%s, txnId:%" PRId64, tstrerror(terrno), pDb->dbName, pTxn->txnId);
+      tdbError("failed to commit pager since %s. dbName:%s, txnId:%" PRId64, tstrerror(terrno), pDb->dbName,
+               pTxn->txnId);
+      return -1;
+    }
+  }
+
+  return 0;
+}
+
+int32_t tdbPrepareAsyncCommit(TDB *pDb, TXN *pTxn) {
+  SPager *pPager;
+  int     ret;
+
+  for (pPager = pDb->pgrList; pPager; pPager = pPager->pNext) {
+    ret = tdbPagerPrepareAsyncCommit(pPager, pTxn);
+    if (ret < 0) {
+      tdbError("failed to commit pager since %s. dbName:%s, txnId:%" PRId64, tstrerror(terrno), pDb->dbName,
+               pTxn->txnId);
       return -1;
     }
   }

source/libs/tdb/src/db/tdbPager.c

@@ -287,6 +287,10 @@ int tdbPagerCommit(SPager *pPager, TXN *pTxn) {
     return -1;
   }
 
+  return 0;
+}
+
+int tdbPagerPostCommit(SPager *pPager, TXN *pTxn) {
   // remove the journal file
   if (tdbOsClose(pPager->jfd) < 0) {
     tdbError("failed to close jfd due to %s. file:%s", strerror(errno), pPager->jFileName);
@@ -305,15 +309,54 @@ int tdbPagerCommit(SPager *pPager, TXN *pTxn) {
   return 0;
 }
 
-int tdbPagerPostCommit(SPager *pPager, TXN *pTxn) {
+int tdbPagerPrepareAsyncCommit(SPager *pPager, TXN *pTxn) {
-  if (tdbOsRemove(pPager->jFileName) < 0 && errno != ENOENT) {
+  SPage *pPage;
-    tdbError("failed to remove file due to %s. file:%s", strerror(errno), pPager->jFileName);
+  int    ret;
+
+  // sync the journal file
+  ret = tdbOsFSync(pPager->jfd);
+  if (ret < 0) {
+    tdbError("failed to fsync jfd due to %s. jFileName:%s", strerror(errno), pPager->jFileName);
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
   }
 
-  pPager->inTran = 0;
+  // loop to write the dirty pages to file
+  SRBTreeIter  iter = tRBTreeIterCreate(&pPager->rbt, 1);
+  SRBTreeNode *pNode = NULL;
+  while ((pNode = tRBTreeIterNext(&iter)) != NULL) {
+    pPage = (SPage *)pNode;
+    if (pPage->isLocal) continue;
+    ret = tdbPagerWritePageToDB(pPager, pPage);
+    if (ret < 0) {
+      tdbError("failed to write page to db since %s", tstrerror(terrno));
+      return -1;
+    }
+  }
 
+  tdbTrace("tdbttl commit:%p, %d/%d", pPager, pPager->dbOrigSize, pPager->dbFileSize);
+  pPager->dbOrigSize = pPager->dbFileSize;
+
+  // release the page
+  iter = tRBTreeIterCreate(&pPager->rbt, 1);
+  while ((pNode = tRBTreeIterNext(&iter)) != NULL) {
+    pPage = (SPage *)pNode;
+    if (pPage->isLocal) continue;
+    pPage->isDirty = 0;
+
+    tRBTreeDrop(&pPager->rbt, (SRBTreeNode *)pPage);
+    tdbPCacheRelease(pPager->pCache, pPage, pTxn);
+  }
+  /*
+  tRBTreeCreate(&pPager->rbt, pageCmpFn);
+
+  // sync the db file
+  if (tdbOsFSync(pPager->fd) < 0) {
+    tdbError("failed to fsync fd due to %s. file:%s", strerror(errno), pPager->dbFileName);
+    terrno = TAOS_SYSTEM_ERROR(errno);
+    return -1;
+  }
+  */
   return 0;
 }
 

source/libs/tdb/src/inc/tdbInt.h

@@ -191,6 +191,7 @@ int  tdbPagerWrite(SPager *pPager, SPage *pPage);
 int  tdbPagerBegin(SPager *pPager, TXN *pTxn);
 int  tdbPagerCommit(SPager *pPager, TXN *pTxn);
 int  tdbPagerPostCommit(SPager *pPager, TXN *pTxn);
+int  tdbPagerPrepareAsyncCommit(SPager *pPager, TXN *pTxn);
 int  tdbPagerAbort(SPager *pPager, TXN *pTxn);
 int  tdbPagerFetchPage(SPager *pPager, SPgno *ppgno, SPage **ppPage, int (*initPage)(SPage *, void *, int), void *arg,
                        TXN *pTxn);