TDengine/source/dnode/vnode/src/tsdb/tsdbCacheRead.c
2024-08-06 17:48:28 +08:00

715 lines
22 KiB
C

/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "functionMgt.h"
#include "taoserror.h"
#include "tarray.h"
#include "tcommon.h"
#include "tsdb.h"
#include "tsdbDataFileRW.h"
#include "tsdbReadUtil.h"
#define HASTYPE(_type, _t) (((_type) & (_t)) == (_t))
static int32_t setFirstLastResColToNull(SColumnInfoData* pCol, int32_t row) {
char* buf = taosMemoryCalloc(1, pCol->info.bytes);
if (buf == NULL) {
return TSDB_CODE_OUT_OF_MEMORY;
}
SFirstLastRes* pRes = (SFirstLastRes*)((char*)buf + VARSTR_HEADER_SIZE);
pRes->bytes = 0;
pRes->hasResult = true;
pRes->isNull = true;
varDataSetLen(buf, pCol->info.bytes - VARSTR_HEADER_SIZE);
int32_t code = colDataSetVal(pCol, row, buf, false);
taosMemoryFree(buf);
return code;
}
static int32_t saveOneRowForLastRaw(SLastCol* pColVal, SCacheRowsReader* pReader, const int32_t slotId,
SColumnInfoData* pColInfoData, int32_t numOfRows) {
SColVal* pVal = &pColVal->colVal;
int32_t code = 0;
// allNullRow = false;
if (IS_VAR_DATA_TYPE(pColVal->colVal.value.type)) {
if (!COL_VAL_IS_VALUE(&pColVal->colVal)) {
colDataSetNULL(pColInfoData, numOfRows);
} else {
varDataSetLen(pReader->transferBuf[slotId], pVal->value.nData);
memcpy(varDataVal(pReader->transferBuf[slotId]), pVal->value.pData, pVal->value.nData);
code = colDataSetVal(pColInfoData, numOfRows, pReader->transferBuf[slotId], false);
}
} else {
code = colDataSetVal(pColInfoData, numOfRows, (const char*)&pVal->value.val, !COL_VAL_IS_VALUE(pVal));
}
return code;
}
static int32_t saveOneRow(SArray* pRow, SSDataBlock* pBlock, SCacheRowsReader* pReader, const int32_t* slotIds,
const int32_t* dstSlotIds, void** pRes, const char* idStr) {
int32_t numOfRows = pBlock->info.rows;
int32_t code = 0;
if (HASTYPE(pReader->type, CACHESCAN_RETRIEVE_LAST)) {
uint64_t ts = TSKEY_MIN;
SFirstLastRes* p = NULL;
col_id_t colId = -1;
SArray* funcTypeBlockArray = taosArrayInit(pReader->numOfCols, sizeof(int32_t));
if (funcTypeBlockArray == NULL) {
return TSDB_CODE_OUT_OF_MEMORY;
}
for (int32_t i = 0; i < pReader->numOfCols; ++i) {
SColumnInfoData* pColInfoData = taosArrayGet(pBlock->pDataBlock, dstSlotIds[i]);
if (pColInfoData == NULL) {
return TSDB_CODE_INVALID_PARA;
}
int32_t funcType = FUNCTION_TYPE_CACHE_LAST;
if (pReader->pFuncTypeList != NULL && taosArrayGetSize(pReader->pFuncTypeList) > i) {
void* pVal = taosArrayGet(pReader->pFuncTypeList, i);
if (pVal == NULL) {
return TSDB_CODE_INVALID_PARA;
}
funcType = *(int32_t*) pVal;
pVal = taosArrayGet(pReader->pFuncTypeList, i);
if (pVal == NULL) {
return TSDB_CODE_INVALID_PARA;
}
void* px = taosArrayInsert(funcTypeBlockArray, dstSlotIds[i], pVal);
if (px == NULL) {
return TSDB_CODE_OUT_OF_MEMORY;
}
}
if (slotIds[i] == -1) {
if (FUNCTION_TYPE_CACHE_LAST_ROW == funcType) {
colDataSetNULL(pColInfoData, numOfRows);
continue;
}
code = setFirstLastResColToNull(pColInfoData, numOfRows);
if (code) {
return code;
}
continue;
}
int32_t slotId = slotIds[i];
SLastCol* pColVal = (SLastCol*)taosArrayGet(pRow, i);
if (pColVal == NULL) {
return TSDB_CODE_INVALID_PARA;
}
colId = pColVal->colVal.cid;
if (FUNCTION_TYPE_CACHE_LAST_ROW == funcType) {
code = saveOneRowForLastRaw(pColVal, pReader, slotId, pColInfoData, numOfRows);
if (code) {
return code;
}
continue;
}
p = (SFirstLastRes*)varDataVal(pRes[i]);
p->ts = pColVal->rowKey.ts;
ts = p->ts;
p->isNull = !COL_VAL_IS_VALUE(&pColVal->colVal);
// allNullRow = p->isNull & allNullRow;
if (!p->isNull) {
if (IS_VAR_DATA_TYPE(pColVal->colVal.value.type)) {
varDataSetLen(p->buf, pColVal->colVal.value.nData);
memcpy(varDataVal(p->buf), pColVal->colVal.value.pData, pColVal->colVal.value.nData);
p->bytes = pColVal->colVal.value.nData + VARSTR_HEADER_SIZE; // binary needs to plus the header size
} else {
memcpy(p->buf, &pColVal->colVal.value.val, pReader->pSchema->columns[slotId].bytes);
p->bytes = pReader->pSchema->columns[slotId].bytes;
}
}
// pColInfoData->info.bytes includes the VARSTR_HEADER_SIZE, need to subtract it
p->hasResult = true;
varDataSetLen(pRes[i], pColInfoData->info.bytes - VARSTR_HEADER_SIZE);
code = colDataSetVal(pColInfoData, numOfRows, (const char*)pRes[i], false);
if (code) {
return code;
}
}
for (int32_t idx = 0; idx < taosArrayGetSize(pBlock->pDataBlock); ++idx) {
SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, idx);
if (pCol == NULL) {
return TSDB_CODE_INVALID_PARA;
}
if (idx < funcTypeBlockArray->size) {
void* pVal = taosArrayGet(funcTypeBlockArray, idx);
if (pVal == NULL) {
return TSDB_CODE_INVALID_PARA;
}
int32_t funcType = *(int32_t*)pVal;
if (FUNCTION_TYPE_CACHE_LAST_ROW == funcType) {
continue;
}
}
if (pCol->info.colId == PRIMARYKEY_TIMESTAMP_COL_ID && pCol->info.type == TSDB_DATA_TYPE_TIMESTAMP) {
if (ts == TSKEY_MIN) {
colDataSetNULL(pCol, numOfRows);
} else {
code = colDataSetVal(pCol, numOfRows, (const char*)&ts, false);
if (code) {
return code;
}
}
continue;
} else if (pReader->numOfCols == 1 && idx != dstSlotIds[0] && (pCol->info.colId == colId || colId == -1)) {
if (p && !p->isNull) {
code = colDataSetVal(pCol, numOfRows, p->buf, false);
if (code) {
return code;
}
} else {
colDataSetNULL(pCol, numOfRows);
}
}
}
// pBlock->info.rows += allNullRow ? 0 : 1;
++pBlock->info.rows;
taosArrayDestroy(funcTypeBlockArray);
} else if (HASTYPE(pReader->type, CACHESCAN_RETRIEVE_LAST_ROW)) {
for (int32_t i = 0; i < pReader->numOfCols; ++i) {
SColumnInfoData* pColInfoData = taosArrayGet(pBlock->pDataBlock, dstSlotIds[i]);
if (pColInfoData == NULL) {
return TSDB_CODE_INVALID_PARA;
}
int32_t slotId = slotIds[i];
if (slotId == -1) {
colDataSetNULL(pColInfoData, numOfRows);
continue;
}
SLastCol* pColVal = (SLastCol*)taosArrayGet(pRow, i);
if (pColVal == NULL) {
return TSDB_CODE_INVALID_PARA;
}
code = saveOneRowForLastRaw(pColVal, pReader, slotId, pColInfoData, numOfRows);
if (code) {
return code;
}
}
// pBlock->info.rows += allNullRow ? 0 : 1;
++pBlock->info.rows;
} else {
tsdbError("invalid retrieve type:%d, %s", pReader->type, idStr);
return TSDB_CODE_INVALID_PARA;
}
return code;
}
static int32_t setTableSchema(SCacheRowsReader* p, uint64_t suid, const char* idstr) {
int32_t numOfTables = p->numOfTables;
if (suid != 0) {
p->pSchema = metaGetTbTSchema(p->pVnode->pMeta, suid, -1, 1);
if (p->pSchema == NULL) {
tsdbWarn("stable:%" PRIu64 " has been dropped, failed to retrieve cached rows, %s", suid, idstr);
return TSDB_CODE_PAR_TABLE_NOT_EXIST;
}
} else {
for (int32_t i = 0; i < numOfTables; ++i) {
uint64_t uid = p->pTableList[i].uid;
p->pSchema = metaGetTbTSchema(p->pVnode->pMeta, uid, -1, 1);
if (p->pSchema != NULL) {
break;
}
tsdbWarn("table:%" PRIu64 " has been dropped, failed to retrieve cached rows, %s", uid, idstr);
}
// all queried tables have been dropped already, return immediately.
if (p->pSchema == NULL) {
tsdbWarn("all queried tables has been dropped, try next group, %s", idstr);
return TSDB_CODE_PAR_TABLE_NOT_EXIST;
}
}
return TSDB_CODE_SUCCESS;
}
int32_t tsdbReuseCacherowsReader(void* reader, void* pTableIdList, int32_t numOfTables) {
SCacheRowsReader* pReader = (SCacheRowsReader*)reader;
pReader->pTableList = pTableIdList;
pReader->numOfTables = numOfTables;
pReader->lastTs = INT64_MIN;
destroySttBlockReader(pReader->pLDataIterArray, NULL);
pReader->pLDataIterArray = taosArrayInit(4, POINTER_BYTES);
return (pReader->pLDataIterArray != NULL) ? TSDB_CODE_SUCCESS : TSDB_CODE_OUT_OF_MEMORY;
}
int32_t tsdbCacherowsReaderOpen(void* pVnode, int32_t type, void* pTableIdList, int32_t numOfTables, int32_t numOfCols,
SArray* pCidList, int32_t* pSlotIds, uint64_t suid, void** pReader, const char* idstr,
SArray* pFuncTypeList, SColumnInfo* pPkCol, int32_t numOfPks) {
*pReader = NULL;
SCacheRowsReader* p = taosMemoryCalloc(1, sizeof(SCacheRowsReader));
if (p == NULL) {
return TSDB_CODE_OUT_OF_MEMORY;
}
p->type = type;
p->pVnode = pVnode;
p->pTsdb = p->pVnode->pTsdb;
p->info.verRange = (SVersionRange){.minVer = 0, .maxVer = INT64_MAX};
p->info.suid = suid;
p->numOfCols = numOfCols;
p->pCidList = pCidList;
p->pSlotIds = pSlotIds;
p->pFuncTypeList = pFuncTypeList;
p->rowKey.numOfPKs = numOfPks;
if (numOfPks > 0) {
p->rowKey.pks[0].type = pPkCol->type;
if (IS_VAR_DATA_TYPE(pPkCol->type)) {
p->rowKey.pks[0].pData = taosMemoryCalloc(1, pPkCol->bytes);
}
p->pkColumn = *pPkCol;
}
if (numOfTables == 0) {
*pReader = p;
return TSDB_CODE_SUCCESS;
}
p->pTableList = pTableIdList;
p->numOfTables = numOfTables;
int32_t code = setTableSchema(p, suid, idstr);
if (code != TSDB_CODE_SUCCESS) {
tsdbCacherowsReaderClose(p);
return code;
}
p->transferBuf = taosMemoryCalloc(p->pSchema->numOfCols, POINTER_BYTES);
if (p->transferBuf == NULL) {
tsdbCacherowsReaderClose(p);
return TSDB_CODE_OUT_OF_MEMORY;
}
for (int32_t i = 0; i < p->pSchema->numOfCols; ++i) {
if (IS_VAR_DATA_TYPE(p->pSchema->columns[i].type)) {
p->transferBuf[i] = taosMemoryMalloc(p->pSchema->columns[i].bytes);
if (p->transferBuf[i] == NULL) {
tsdbCacherowsReaderClose(p);
return TSDB_CODE_OUT_OF_MEMORY;
}
}
}
p->idstr = taosStrdup(idstr);
code = taosThreadMutexInit(&p->readerMutex, NULL);
if (code) {
tsdbCacherowsReaderClose(p);
return code;
}
p->lastTs = INT64_MIN;
*pReader = p;
return code;
}
void tsdbCacherowsReaderClose(void* pReader) {
SCacheRowsReader* p = pReader;
if (p == NULL) {
return;
}
if (p->pSchema != NULL && p->transferBuf != NULL) {
for (int32_t i = 0; i < p->pSchema->numOfCols; ++i) {
taosMemoryFreeClear(p->transferBuf[i]);
}
taosMemoryFree(p->transferBuf);
taosMemoryFree(p->pSchema);
}
taosMemoryFree(p->pCurrSchema);
if (p->rowKey.numOfPKs > 0) {
for (int32_t i = 0; i < p->rowKey.numOfPKs; i++) {
if (IS_VAR_DATA_TYPE(p->rowKey.pks[i].type)) {
taosMemoryFree(p->rowKey.pks[i].pData);
}
}
}
if (p->pLDataIterArray) {
destroySttBlockReader(p->pLDataIterArray, NULL);
}
if (p->pFileReader) {
(void) tsdbDataFileReaderClose(&p->pFileReader);
p->pFileReader = NULL;
}
taosMemoryFree((void*)p->idstr);
(void) taosThreadMutexDestroy(&p->readerMutex);
if (p->pTableMap) {
void* pe = NULL;
int32_t iter = 0;
while ((pe = tSimpleHashIterate(p->pTableMap, pe, &iter)) != NULL) {
STableLoadInfo* pInfo = *(STableLoadInfo**)pe;
taosArrayDestroy(pInfo->pTombData);
pInfo->pTombData = NULL;
}
tSimpleHashCleanup(p->pTableMap);
}
if (p->uidList) {
taosMemoryFree(p->uidList);
}
taosMemoryFree(pReader);
}
static void freeItemOfRow(void* pItem) {
SLastCol* pCol = (SLastCol*)pItem;
if (IS_VAR_DATA_TYPE(pCol->colVal.value.type) && pCol->colVal.value.pData) {
taosMemoryFree(pCol->colVal.value.pData);
}
}
static void freeItemWithPk(void* pItem) {
SLastCol* pCol = (SLastCol*)pItem;
for (int i = 0; i < pCol->rowKey.numOfPKs; i++) {
if (IS_VAR_DATA_TYPE(pCol->rowKey.pks[i].type)) {
taosMemoryFree(pCol->rowKey.pks[i].pData);
}
}
if (IS_VAR_DATA_TYPE(pCol->colVal.value.type) && pCol->colVal.value.pData) {
taosMemoryFree(pCol->colVal.value.pData);
}
}
static int32_t tsdbCacheQueryReseek(void* pQHandle) {
int32_t code = 0;
SCacheRowsReader* pReader = pQHandle;
code = taosThreadMutexTryLock(&pReader->readerMutex);
if (code == 0) {
// pause current reader's state if not paused, save ts & version for resuming
// just wait for the big all tables' snapshot untaking for now
code = TSDB_CODE_VND_QUERY_BUSY;
(void)taosThreadMutexUnlock(&pReader->readerMutex);
return code;
} else if (code == EBUSY) {
return TSDB_CODE_VND_QUERY_BUSY;
} else {
return -1;
}
}
int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32_t* slotIds, const int32_t* dstSlotIds,
SArray* pTableUidList) {
if (pReader == NULL || pResBlock == NULL) {
return TSDB_CODE_INVALID_PARA;
}
int32_t code = TSDB_CODE_SUCCESS;
bool hasRes = false;
SArray* pRow = NULL;
void** pRes = NULL;
SCacheRowsReader* pr = pReader;
int32_t pkBufLen = 0;
pr->pReadSnap = NULL;
pRow = taosArrayInit(TARRAY_SIZE(pr->pCidList), sizeof(SLastCol));
if (pRow == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
pRes = taosMemoryCalloc(pr->numOfCols, POINTER_BYTES);
if (pRes == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
pkBufLen = (pr->rowKey.numOfPKs > 0) ? pr->pkColumn.bytes : 0;
for (int32_t j = 0; j < pr->numOfCols; ++j) {
int32_t bytes = (slotIds[j] == -1) ? 1 : pr->pSchema->columns[slotIds[j]].bytes;
pRes[j] = taosMemoryCalloc(1, sizeof(SFirstLastRes) + bytes + pkBufLen + VARSTR_HEADER_SIZE);
if (pRes[j] == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
SFirstLastRes* p = (SFirstLastRes*)varDataVal(pRes[j]);
p->ts = INT64_MIN;
}
(void)taosThreadMutexLock(&pr->readerMutex);
code = tsdbTakeReadSnap2((STsdbReader*)pr, tsdbCacheQueryReseek, &pr->pReadSnap);
if (code != TSDB_CODE_SUCCESS) {
goto _end;
}
int8_t ltype = (pr->type & CACHESCAN_RETRIEVE_LAST) >> 3;
STableKeyInfo* pTableList = pr->pTableList;
// retrieve the only one last row of all tables in the uid list.
if (HASTYPE(pr->type, CACHESCAN_RETRIEVE_TYPE_SINGLE)) {
SArray* pLastCols = taosArrayInit(pr->numOfCols, sizeof(SLastCol));
if (pLastCols == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
for (int32_t i = 0; i < pr->numOfCols; ++i) {
int32_t slotId = slotIds[i];
if (slotId == -1) {
SLastCol p = {.rowKey.ts = INT64_MIN, .colVal.value.type = TSDB_DATA_TYPE_BOOL, .colVal.flag = CV_FLAG_NULL};
void* px = taosArrayPush(pLastCols, &p);
if (px == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
continue;
}
struct STColumn* pCol = &pr->pSchema->columns[slotId];
SLastCol p = {.rowKey.ts = INT64_MIN, .colVal.value.type = pCol->type, .colVal.flag = CV_FLAG_NULL};
if (pr->rowKey.numOfPKs > 0) {
p.rowKey.numOfPKs = pr->rowKey.numOfPKs;
for (int32_t j = 0; j < pr->rowKey.numOfPKs; j++) {
p.rowKey.pks[j].type = pr->pkColumn.type;
if (IS_VAR_DATA_TYPE(pr->pkColumn.type)) {
p.rowKey.pks[j].pData = taosMemoryCalloc(1, pr->pkColumn.bytes);
if (p.rowKey.pks[j].pData == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
}
}
}
if (IS_VAR_DATA_TYPE(pCol->type)) {
p.colVal.value.pData = taosMemoryCalloc(pCol->bytes, sizeof(char));
if (p.colVal.value.pData == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
}
void* px = taosArrayPush(pLastCols, &p);
if (px == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
}
int64_t st = taosGetTimestampUs();
int64_t totalLastTs = INT64_MAX;
for (int32_t i = 0; i < pr->numOfTables; ++i) {
tb_uid_t uid = pTableList[i].uid;
code = tsdbCacheGetBatch(pr->pTsdb, uid, pRow, pr, ltype);
if (code == -1) {// fix the invalid return code
code = 0;
} else if (code != 0) {
goto _end;
}
if (TARRAY_SIZE(pRow) <= 0 || COL_VAL_IS_NONE(&((SLastCol*)TARRAY_DATA(pRow))[0].colVal)) {
taosArrayClearEx(pRow, freeItemOfRow);
continue;
}
{
bool hasNotNullRow = true;
int64_t singleTableLastTs = INT64_MAX;
for (int32_t k = 0; k < pr->numOfCols; ++k) {
if (slotIds[k] == -1) continue;
SLastCol* p = taosArrayGet(pLastCols, k);
if (p == NULL) {
return TSDB_CODE_INVALID_PARA;
}
SLastCol* pColVal = (SLastCol*)taosArrayGet(pRow, k);
if (pColVal == NULL) {
return TSDB_CODE_INVALID_PARA;
}
if (tRowKeyCompare(&pColVal->rowKey, &p->rowKey) > 0) {
if (!COL_VAL_IS_VALUE(&pColVal->colVal) && HASTYPE(pr->type, CACHESCAN_RETRIEVE_LAST)) {
if (!COL_VAL_IS_VALUE(&p->colVal)) {
hasNotNullRow = false;
}
// For all of cols is null, the last null col of last table will be save
if (i != pr->numOfTables - 1 || k != pr->numOfCols - 1 || hasRes) {
continue;
}
}
hasRes = true;
p->rowKey.ts = pColVal->rowKey.ts;
for (int32_t j = 0; j < p->rowKey.numOfPKs; j++) {
if (IS_VAR_DATA_TYPE(p->rowKey.pks[j].type)) {
memcpy(p->rowKey.pks[j].pData, pColVal->rowKey.pks[j].pData, pColVal->rowKey.pks[j].nData);
p->rowKey.pks[j].nData = pColVal->rowKey.pks[j].nData;
} else {
p->rowKey.pks[j].val = pColVal->rowKey.pks[j].val;
}
}
if (k == 0) {
if (TARRAY_SIZE(pTableUidList) == 0) {
void* px = taosArrayPush(pTableUidList, &uid);
if (px == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
} else {
taosArraySet(pTableUidList, 0, &uid);
}
}
if (pColVal->rowKey.ts < singleTableLastTs && HASTYPE(pr->type, CACHESCAN_RETRIEVE_LAST)) {
singleTableLastTs = pColVal->rowKey.ts;
}
if (!IS_VAR_DATA_TYPE(pColVal->colVal.value.type)) {
p->colVal = pColVal->colVal;
} else {
if (COL_VAL_IS_VALUE(&pColVal->colVal)) {
memcpy(p->colVal.value.pData, pColVal->colVal.value.pData, pColVal->colVal.value.nData);
}
p->colVal.value.nData = pColVal->colVal.value.nData;
p->colVal.value.type = pColVal->colVal.value.type;
p->colVal.flag = pColVal->colVal.flag;
p->colVal.cid = pColVal->colVal.cid;
}
}
}
if (hasNotNullRow) {
if (INT64_MAX == totalLastTs || (INT64_MAX != singleTableLastTs && totalLastTs < singleTableLastTs)) {
totalLastTs = singleTableLastTs;
}
double cost = (taosGetTimestampUs() - st) / 1000.0;
if (cost > tsCacheLazyLoadThreshold) {
pr->lastTs = totalLastTs;
}
}
}
taosArrayClearEx(pRow, freeItemOfRow);
}
if (hasRes) {
code = saveOneRow(pLastCols, pResBlock, pr, slotIds, dstSlotIds, pRes, pr->idstr);
if (code) {
goto _end;
}
}
taosArrayDestroyEx(pLastCols, freeItemWithPk);
} else if (HASTYPE(pr->type, CACHESCAN_RETRIEVE_TYPE_ALL)) {
for (int32_t i = pr->tableIndex; i < pr->numOfTables; ++i) {
tb_uid_t uid = pTableList[i].uid;
if ((code = tsdbCacheGetBatch(pr->pTsdb, uid, pRow, pr, ltype)) != 0) {
if (code == -1) {// fix the invalid return code
code = 0;
} else if (code != 0) {
goto _end;
}
}
if (TARRAY_SIZE(pRow) <= 0 || COL_VAL_IS_NONE(&((SLastCol*)TARRAY_DATA(pRow))[0].colVal)) {
taosArrayClearEx(pRow, freeItemOfRow);
continue;
}
code = saveOneRow(pRow, pResBlock, pr, slotIds, dstSlotIds, pRes, pr->idstr);
if (code) {
goto _end;
}
taosArrayClearEx(pRow, freeItemOfRow);
void* px = taosArrayPush(pTableUidList, &uid);
if (px == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _end;
}
++pr->tableIndex;
if (pResBlock->info.rows >= pResBlock->info.capacity) {
goto _end;
}
}
} else {
code = TSDB_CODE_INVALID_PARA;
}
_end:
tsdbUntakeReadSnap2((STsdbReader*)pr, pr->pReadSnap, true);
pr->pReadSnap = NULL;
if (pr->pCurFileSet) {
pr->pCurFileSet = NULL;
}
(void)taosThreadMutexUnlock(&pr->readerMutex);
if (pRes != NULL) {
for (int32_t j = 0; j < pr->numOfCols; ++j) {
taosMemoryFree(pRes[j]);
}
}
taosMemoryFree(pRes);
taosArrayDestroy(pRow);
return code;
}