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drop super table

This commit is contained in:
Hongze Cheng 2022-05-25 07:14:36 +00:00
parent 75c47328f8
commit 74f2746677
1 changed files with 54 additions and 47 deletions
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97
source/dnode/vnode/src/meta/metaTable.c
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@ -71,64 +71,71 @@ _err:
} }
int metaDropSTable(SMeta *pMeta, int64_t verison, SVDropStbReq *pReq) { int metaDropSTable(SMeta *pMeta, int64_t verison, SVDropStbReq *pReq) {
TBC *pNameIdxc = NULL; void *pKey = NULL;
TBC *pUidIdxc = NULL; int nKey = 0;
void *pData = NULL;
int nData = 0;
int c = 0;
int rc = 0;
// check if super table exists
rc = tdbTbGet(pMeta->pNameIdx, pReq->name, strlen(pReq->name) + 1, &pData, &nData);
if (rc < 0 || *(tb_uid_t *)pData != pReq->suid) {
terrno = TSDB_CODE_VND_TABLE_NOT_EXIST;
return -1;
}
// drop all child tables
TBC *pCtbIdxc = NULL; TBC *pCtbIdxc = NULL;
SCtbIdxKey *pCtbIdxKey; SArray *pArray = taosArrayInit(8, sizeof(tb_uid_t));
const void *pKey = NULL;
int nKey;
const void *pData = NULL;
int nData;
int c, ret;
// prepare uid idx cursor
tdbTbcOpen(pMeta->pUidIdx, &pUidIdxc, &pMeta->txn);
ret = tdbTbcMoveTo(pUidIdxc, &pReq->suid, sizeof(tb_uid_t), &c);
if (ret < 0 || c != 0) {
terrno = TSDB_CODE_VND_TB_NOT_EXIST;
tdbTbcClose(pUidIdxc);
goto _err;
}
// prepare name idx cursor
tdbTbcOpen(pMeta->pNameIdx, &pNameIdxc, &pMeta->txn);
ret = tdbTbcMoveTo(pNameIdxc, pReq->name, strlen(pReq->name) + 1, &c);
if (ret < 0 || c != 0) {
ASSERT(0);
}
tdbTbcDelete(pUidIdxc);
tdbTbcDelete(pNameIdxc);
tdbTbcClose(pUidIdxc);
tdbTbcClose(pNameIdxc);
// loop to drop each child table
tdbTbcOpen(pMeta->pCtbIdx, &pCtbIdxc, &pMeta->txn); tdbTbcOpen(pMeta->pCtbIdx, &pCtbIdxc, &pMeta->txn);
ret = tdbTbcMoveTo(pCtbIdxc, &(SCtbIdxKey){.suid = pReq->suid, .uid = INT64_MIN}, sizeof(SCtbIdxKey), &c); rc = tdbTbcMoveTo(pCtbIdxc, &(SCtbIdxKey){.suid = pReq->suid, .uid = INT64_MIN}, sizeof(SCtbIdxKey), &c);
if (ret < 0 || (c < 0 && tdbTbcMoveToNext(pCtbIdxc) < 0)) { if (rc < 0) {
tdbTbcClose(pCtbIdxc); tdbTbcClose(pCtbIdxc);
goto _exit; metaWLock(pMeta);
goto _drop_super_table;
} }
for (;;) { for (;;) {
tdbTbcGet(pCtbIdxc, &pKey, &nKey, NULL, NULL); rc = tdbTbcNext(pCtbIdxc, &pKey, &nKey, NULL, NULL);
pCtbIdxKey = (SCtbIdxKey *)pKey; if (rc < 0) break;
if (pCtbIdxKey->suid > pReq->suid) break; if (((SCtbIdxKey *)pKey)->suid < pReq->suid) {
continue;
// drop the child table (TODO) } else if (((SCtbIdxKey *)pKey)->suid > pReq->suid) {
break;
if (tdbTbcMoveToNext(pCtbIdxc) < 0) break;
} }
taosArrayPush(pArray, &(((SCtbIdxKey *)pKey)->uid));
}
tdbTbcClose(pCtbIdxc);
metaWLock(pMeta);
for (int32_t iChild = 0; iChild < taosArrayGetSize(pArray); iChild++) {
tb_uid_t uid = *(tb_uid_t *)taosArrayGet(pArray, iChild);
metaDropTableByUid(pMeta, uid);
}
taosArrayDestroy(pArray);
// drop super table
_drop_super_table:
tdbTbGet(pMeta->pUidIdx, &pReq->suid, sizeof(tb_uid_t), &pData, &nData);
tdbTbDelete(pMeta->pTbDb, &(STbDbKey){.version = *(int64_t *)pData, .uid = pReq->suid}, sizeof(STbDbKey),
&pMeta->txn);
tdbTbDelete(pMeta->pNameIdx, pReq->name, strlen(pReq->name) + 1, &pMeta->txn);
tdbTbDelete(pMeta->pUidIdx, &pReq->suid, sizeof(tb_uid_t), &pMeta->txn);
metaULock(pMeta);
_exit: _exit:
tdbFree(pKey);
tdbFree(pData);
metaDebug("vgId:%d super table %s uid:%" PRId64 " is dropped", TD_VID(pMeta->pVnode), pReq->name, pReq->suid); metaDebug("vgId:%d super table %s uid:%" PRId64 " is dropped", TD_VID(pMeta->pVnode), pReq->name, pReq->suid);
return 0; return 0;
_err:
metaError("vgId:%d failed to drop super table %s uid:%" PRId64 " since %s", TD_VID(pMeta->pVnode), pReq->name,
pReq->suid, tstrerror(terrno));
return -1;
} }
int metaAlterSTable(SMeta *pMeta, int64_t version, SVCreateStbReq *pReq) { int metaAlterSTable(SMeta *pMeta, int64_t version, SVCreateStbReq *pReq) {