818 lines
29 KiB
C
818 lines
29 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "executorInt.h"
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#include "filter.h"
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#include "function.h"
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#include "operator.h"
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#include "os.h"
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#include "querynodes.h"
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#include "querytask.h"
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#include "tcompare.h"
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#include "tdatablock.h"
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#include "thash.h"
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#include "tmsg.h"
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#include "ttypes.h"
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typedef struct SMJoinRowCtx {
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bool rowRemains;
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int64_t ts;
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SArray* leftRowLocations;
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SArray* leftCreatedBlocks;
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SArray* rightCreatedBlocks;
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int32_t leftRowIdx;
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int32_t rightRowIdx;
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bool rightUseBuildTable;
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SArray* rightRowLocations;
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} SMJoinRowCtx;
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typedef struct SMJoinOperatorInfo {
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SSDataBlock* pRes;
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int32_t joinType;
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int32_t inputOrder;
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bool downstreamFetchDone[2];
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int16_t downstreamResBlkId[2];
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SSDataBlock* pLeft;
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int32_t leftPos;
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SColumnInfo leftCol;
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SSDataBlock* pRight;
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int32_t rightPos;
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SColumnInfo rightCol;
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SNode* pCondAfterMerge;
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SNode* pColEqualOnConditions;
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SArray* leftEqOnCondCols;
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char* leftEqOnCondKeyBuf;
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int32_t leftEqOnCondKeyLen;
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SArray* rightEqOnCondCols;
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char* rightEqOnCondKeyBuf;
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int32_t rightEqOnCondKeyLen;
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SSHashObj* rightBuildTable;
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SMJoinRowCtx rowCtx;
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int64_t resRows;
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} SMJoinOperatorInfo;
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static void setJoinColumnInfo(SColumnInfo* pColumn, const SColumnNode* pColumnNode);
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static SSDataBlock* doMergeJoin(struct SOperatorInfo* pOperator);
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static void destroyMergeJoinOperator(void* param);
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static void extractTimeCondition(SMJoinOperatorInfo* pInfo, SSortMergeJoinPhysiNode* pJoinNode, const char* idStr);
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static void extractTimeCondition(SMJoinOperatorInfo* pInfo, SSortMergeJoinPhysiNode* pJoinNode, const char* idStr) {
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SNode* pPrimKeyCond = pJoinNode->pPrimKeyCond;
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if (nodeType(pPrimKeyCond) != QUERY_NODE_OPERATOR) {
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qError("not support this in join operator, %s", idStr);
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return; // do not handle this
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}
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SOperatorNode* pNode = (SOperatorNode*)pPrimKeyCond;
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SColumnNode* col1 = (SColumnNode*)pNode->pLeft;
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SColumnNode* col2 = (SColumnNode*)pNode->pRight;
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SColumnNode* leftTsCol = NULL;
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SColumnNode* rightTsCol = NULL;
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if (col1->dataBlockId == col2->dataBlockId) {
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leftTsCol = col1;
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rightTsCol = col2;
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} else {
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if (col1->dataBlockId == pInfo->downstreamResBlkId[0]) {
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ASSERT(col2->dataBlockId == pInfo->downstreamResBlkId[1]);
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leftTsCol = col1;
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rightTsCol = col2;
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} else {
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ASSERT(col1->dataBlockId == pInfo->downstreamResBlkId[1]);
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ASSERT(col2->dataBlockId == pInfo->downstreamResBlkId[0]);
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leftTsCol = col2;
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rightTsCol = col1;
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}
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}
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setJoinColumnInfo(&pInfo->leftCol, leftTsCol);
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setJoinColumnInfo(&pInfo->rightCol, rightTsCol);
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}
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static void extractEqualOnCondColsFromOper(SMJoinOperatorInfo* pInfo, SOperatorNode* pOperNode,
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SColumn* pLeft, SColumn* pRight) {
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SColumnNode* pLeftNode = (SColumnNode*)pOperNode->pLeft;
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SColumnNode* pRightNode = (SColumnNode*)pOperNode->pRight;
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if (pLeftNode->dataBlockId == pRightNode->dataBlockId || pLeftNode->dataBlockId == pInfo->downstreamResBlkId[0]) {
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*pLeft = extractColumnFromColumnNode((SColumnNode*)pOperNode->pLeft);
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*pRight = extractColumnFromColumnNode((SColumnNode*)pOperNode->pRight);
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} else {
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*pLeft = extractColumnFromColumnNode((SColumnNode*)pOperNode->pRight);
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*pRight = extractColumnFromColumnNode((SColumnNode*)pOperNode->pLeft);
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}
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}
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static void extractEqualOnCondCols(SMJoinOperatorInfo* pInfo, SNode* pEqualOnCondNode,
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SArray* leftTagEqCols, SArray* rightTagEqCols) {
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SColumn left = {0};
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SColumn right = {0};
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if (nodeType(pEqualOnCondNode) == QUERY_NODE_LOGIC_CONDITION && ((SLogicConditionNode*)pEqualOnCondNode)->condType == LOGIC_COND_TYPE_AND) {
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SNode* pNode = NULL;
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FOREACH(pNode, ((SLogicConditionNode*)pEqualOnCondNode)->pParameterList) {
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SOperatorNode* pOperNode = (SOperatorNode*)pNode;
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extractEqualOnCondColsFromOper(pInfo, pOperNode, &left, &right);
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taosArrayPush(leftTagEqCols, &left);
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taosArrayPush(rightTagEqCols, &right);
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}
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return;
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}
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if (nodeType(pEqualOnCondNode) == QUERY_NODE_OPERATOR) {
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SOperatorNode* pOperNode = (SOperatorNode*)pEqualOnCondNode;
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extractEqualOnCondColsFromOper(pInfo, pOperNode, &left, &right);
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taosArrayPush(leftTagEqCols, &left);
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taosArrayPush(rightTagEqCols, &right);
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}
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}
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static int32_t initTagColskeyBuf(int32_t* keyLen, char** keyBuf, const SArray* pGroupColList) {
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int32_t numOfGroupCols = taosArrayGetSize(pGroupColList);
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for (int32_t i = 0; i < numOfGroupCols; ++i) {
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SColumn* pCol = (SColumn*)taosArrayGet(pGroupColList, i);
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(*keyLen) += pCol->bytes; // actual data + null_flag
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}
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int32_t nullFlagSize = sizeof(int8_t) * numOfGroupCols;
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(*keyLen) += nullFlagSize;
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if (*keyLen >= 0) {
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(*keyBuf) = taosMemoryCalloc(1, (*keyLen));
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if ((*keyBuf) == NULL) {
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return TSDB_CODE_OUT_OF_MEMORY;
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}
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}
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return TSDB_CODE_SUCCESS;
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}
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static int32_t fillKeyBufFromTagCols(SArray* pCols, SSDataBlock* pBlock, int32_t rowIndex, void* pKey) {
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SColumnDataAgg* pColAgg = NULL;
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size_t numOfGroupCols = taosArrayGetSize(pCols);
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char* isNull = (char*)pKey;
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char* pStart = (char*)pKey + sizeof(int8_t) * numOfGroupCols;
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for (int32_t i = 0; i < numOfGroupCols; ++i) {
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SColumn* pCol = (SColumn*) taosArrayGet(pCols, i);
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SColumnInfoData* pColInfoData = taosArrayGet(pBlock->pDataBlock, pCol->slotId);
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// valid range check. todo: return error code.
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if (pCol->slotId > taosArrayGetSize(pBlock->pDataBlock)) {
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continue;
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}
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if (pBlock->pBlockAgg != NULL) {
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pColAgg = pBlock->pBlockAgg[pCol->slotId]; // TODO is agg data matched?
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}
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if (colDataIsNull(pColInfoData, pBlock->info.rows, rowIndex, pColAgg)) {
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isNull[i] = 1;
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} else {
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isNull[i] = 0;
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char* val = colDataGetData(pColInfoData, rowIndex);
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if (pCol->type == TSDB_DATA_TYPE_JSON) {
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int32_t dataLen = getJsonValueLen(val);
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memcpy(pStart, val, dataLen);
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pStart += dataLen;
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} else if (IS_VAR_DATA_TYPE(pCol->type)) {
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varDataCopy(pStart, val);
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pStart += varDataTLen(val);
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} else {
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memcpy(pStart, val, pCol->bytes);
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pStart += pCol->bytes;
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}
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}
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}
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return (int32_t)(pStart - (char*)pKey);
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}
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SOperatorInfo** buildMergeJoinDownstreams(SMJoinOperatorInfo* pInfo, SOperatorInfo** pDownstream) {
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SOperatorInfo** p = taosMemoryMalloc(2 * POINTER_BYTES);
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if (p) {
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p[0] = pDownstream[0];
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p[1] = pDownstream[0];
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pInfo->downstreamResBlkId[0] = getOperatorResultBlockId(p[0], 0);
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pInfo->downstreamResBlkId[1] = getOperatorResultBlockId(p[1], 1);
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}
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return p;
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}
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SOperatorInfo* createMergeJoinOperatorInfo(SOperatorInfo** pDownstream, int32_t numOfDownstream,
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SSortMergeJoinPhysiNode* pJoinNode, SExecTaskInfo* pTaskInfo) {
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SMJoinOperatorInfo* pInfo = taosMemoryCalloc(1, sizeof(SMJoinOperatorInfo));
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SOperatorInfo* pOperator = taosMemoryCalloc(1, sizeof(SOperatorInfo));
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bool newDownstreams = false;
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int32_t code = TSDB_CODE_SUCCESS;
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if (pOperator == NULL || pInfo == NULL) {
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code = TSDB_CODE_OUT_OF_MEMORY;
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goto _error;
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}
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if (1 == numOfDownstream) {
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newDownstreams = true;
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pDownstream = buildMergeJoinDownstreams(pInfo, pDownstream);
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if (NULL == pDownstream) {
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code = TSDB_CODE_OUT_OF_MEMORY;
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goto _error;
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}
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numOfDownstream = 2;
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}
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int32_t numOfCols = 0;
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pInfo->pRes = createDataBlockFromDescNode(pJoinNode->node.pOutputDataBlockDesc);
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SExprInfo* pExprInfo = createExprInfo(pJoinNode->pTargets, NULL, &numOfCols);
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initResultSizeInfo(&pOperator->resultInfo, 4096);
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blockDataEnsureCapacity(pInfo->pRes, pOperator->resultInfo.capacity);
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setOperatorInfo(pOperator, "MergeJoinOperator", QUERY_NODE_PHYSICAL_PLAN_MERGE_JOIN, false, OP_NOT_OPENED, pInfo, pTaskInfo);
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pOperator->exprSupp.pExprInfo = pExprInfo;
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pOperator->exprSupp.numOfExprs = numOfCols;
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extractTimeCondition(pInfo, pJoinNode, GET_TASKID(pTaskInfo));
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if (pJoinNode->pOtherOnCond != NULL && pJoinNode->node.pConditions != NULL) {
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pInfo->pCondAfterMerge = nodesMakeNode(QUERY_NODE_LOGIC_CONDITION);
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if (pInfo->pCondAfterMerge == NULL) {
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code = TSDB_CODE_OUT_OF_MEMORY;
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goto _error;
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}
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SLogicConditionNode* pLogicCond = (SLogicConditionNode*)(pInfo->pCondAfterMerge);
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pLogicCond->pParameterList = nodesMakeList();
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if (pLogicCond->pParameterList == NULL) {
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code = TSDB_CODE_OUT_OF_MEMORY;
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goto _error;
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}
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nodesListMakeAppend(&pLogicCond->pParameterList, nodesCloneNode(pJoinNode->pOtherOnCond));
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nodesListMakeAppend(&pLogicCond->pParameterList, nodesCloneNode(pJoinNode->node.pConditions));
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pLogicCond->condType = LOGIC_COND_TYPE_AND;
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} else if (pJoinNode->pOtherOnCond != NULL) {
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pInfo->pCondAfterMerge = nodesCloneNode(pJoinNode->pOtherOnCond);
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} else if (pJoinNode->pColEqCond != NULL) {
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pInfo->pCondAfterMerge = nodesCloneNode(pJoinNode->pColEqCond);
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} else if (pJoinNode->node.pConditions != NULL) {
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pInfo->pCondAfterMerge = nodesCloneNode(pJoinNode->node.pConditions);
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} else {
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pInfo->pCondAfterMerge = NULL;
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}
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code = filterInitFromNode(pInfo->pCondAfterMerge, &pOperator->exprSupp.pFilterInfo, 0);
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if (code != TSDB_CODE_SUCCESS) {
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goto _error;
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}
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pInfo->inputOrder = TSDB_ORDER_ASC;
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if (pJoinNode->node.inputTsOrder == ORDER_ASC) {
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pInfo->inputOrder = TSDB_ORDER_ASC;
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} else if (pJoinNode->node.inputTsOrder == ORDER_DESC) {
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pInfo->inputOrder = TSDB_ORDER_DESC;
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}
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pInfo->pColEqualOnConditions = pJoinNode->pColEqCond;
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if (pInfo->pColEqualOnConditions != NULL) {
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pInfo->leftEqOnCondCols = taosArrayInit(4, sizeof(SColumn));
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pInfo->rightEqOnCondCols = taosArrayInit(4, sizeof(SColumn));
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extractEqualOnCondCols(pInfo, pInfo->pColEqualOnConditions, pInfo->leftEqOnCondCols, pInfo->rightEqOnCondCols);
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initTagColskeyBuf(&pInfo->leftEqOnCondKeyLen, &pInfo->leftEqOnCondKeyBuf, pInfo->leftEqOnCondCols);
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initTagColskeyBuf(&pInfo->rightEqOnCondKeyLen, &pInfo->rightEqOnCondKeyBuf, pInfo->rightEqOnCondCols);
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_hash_fn_t hashFn = taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY);
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pInfo->rightBuildTable = tSimpleHashInit(256, hashFn);
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}
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pOperator->fpSet = createOperatorFpSet(optrDummyOpenFn, doMergeJoin, NULL, destroyMergeJoinOperator, optrDefaultBufFn, NULL, optrDefaultGetNextExtFn, NULL);
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code = appendDownstream(pOperator, pDownstream, numOfDownstream);
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if (code != TSDB_CODE_SUCCESS) {
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goto _error;
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}
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pOperator->numOfRealDownstream = newDownstreams ? 1 : 2;
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return pOperator;
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_error:
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if (pInfo != NULL) {
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destroyMergeJoinOperator(pInfo);
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}
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if (newDownstreams) {
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taosMemoryFree(pDownstream);
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}
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taosMemoryFree(pOperator);
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pTaskInfo->code = code;
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return NULL;
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}
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void setJoinColumnInfo(SColumnInfo* pColumn, const SColumnNode* pColumnNode) {
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pColumn->slotId = pColumnNode->slotId;
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pColumn->type = pColumnNode->node.resType.type;
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pColumn->bytes = pColumnNode->node.resType.bytes;
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pColumn->precision = pColumnNode->node.resType.precision;
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pColumn->scale = pColumnNode->node.resType.scale;
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}
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static void mergeJoinDestoryBuildTable(SSHashObj* pBuildTable) {
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void* p = NULL;
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int32_t iter = 0;
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while ((p = tSimpleHashIterate(pBuildTable, p, &iter)) != NULL) {
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SArray* rows = (*(SArray**)p);
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taosArrayDestroy(rows);
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}
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tSimpleHashCleanup(pBuildTable);
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}
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void destroyMergeJoinOperator(void* param) {
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SMJoinOperatorInfo* pJoinOperator = (SMJoinOperatorInfo*)param;
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if (pJoinOperator->pColEqualOnConditions != NULL) {
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mergeJoinDestoryBuildTable(pJoinOperator->rightBuildTable);
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taosMemoryFreeClear(pJoinOperator->rightEqOnCondKeyBuf);
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taosArrayDestroy(pJoinOperator->rightEqOnCondCols);
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taosMemoryFreeClear(pJoinOperator->leftEqOnCondKeyBuf);
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taosArrayDestroy(pJoinOperator->leftEqOnCondCols);
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}
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nodesDestroyNode(pJoinOperator->pCondAfterMerge);
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taosArrayDestroy(pJoinOperator->rowCtx.leftCreatedBlocks);
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taosArrayDestroy(pJoinOperator->rowCtx.rightCreatedBlocks);
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taosArrayDestroy(pJoinOperator->rowCtx.leftRowLocations);
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taosArrayDestroy(pJoinOperator->rowCtx.rightRowLocations);
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pJoinOperator->pRes = blockDataDestroy(pJoinOperator->pRes);
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taosMemoryFreeClear(param);
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}
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static void mergeJoinJoinLeftRight(struct SOperatorInfo* pOperator, SSDataBlock* pRes, int32_t currRow,
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SSDataBlock* pLeftBlock, int32_t leftPos, SSDataBlock* pRightBlock,
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int32_t rightPos) {
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SMJoinOperatorInfo* pJoinInfo = pOperator->info;
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for (int32_t i = 0; i < pOperator->exprSupp.numOfExprs; ++i) {
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SColumnInfoData* pDst = taosArrayGet(pRes->pDataBlock, i);
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SExprInfo* pExprInfo = &pOperator->exprSupp.pExprInfo[i];
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int32_t blockId = pExprInfo->base.pParam[0].pCol->dataBlockId;
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int32_t slotId = pExprInfo->base.pParam[0].pCol->slotId;
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int32_t rowIndex = -1;
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SColumnInfoData* pSrc = NULL;
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if (pLeftBlock->info.id.blockId == blockId) {
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pSrc = taosArrayGet(pLeftBlock->pDataBlock, slotId);
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rowIndex = leftPos;
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} else {
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pSrc = taosArrayGet(pRightBlock->pDataBlock, slotId);
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rowIndex = rightPos;
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}
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if (colDataIsNull_s(pSrc, rowIndex)) {
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colDataSetNULL(pDst, currRow);
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} else {
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char* p = colDataGetData(pSrc, rowIndex);
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colDataSetVal(pDst, currRow, p, false);
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}
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}
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}
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typedef struct SRowLocation {
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SSDataBlock* pDataBlock;
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int32_t pos;
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} SRowLocation;
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// pBlock[tsSlotId][startPos, endPos) == timestamp,
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static int32_t mergeJoinGetBlockRowsEqualTs(SSDataBlock* pBlock, int16_t tsSlotId, int32_t startPos, int64_t timestamp,
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int32_t* pEndPos, SArray* rowLocations, SArray* createdBlocks) {
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int32_t numRows = pBlock->info.rows;
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ASSERT(startPos < numRows);
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SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, tsSlotId);
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int32_t i = startPos;
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for (; i < numRows; ++i) {
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char* pNextVal = colDataGetData(pCol, i);
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if (timestamp != *(int64_t*)pNextVal) {
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break;
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}
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}
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int32_t endPos = i;
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*pEndPos = endPos;
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if (endPos - startPos == 0) {
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return 0;
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}
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SSDataBlock* block = pBlock;
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bool createdNewBlock = false;
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if (endPos == numRows) {
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block = blockDataExtractBlock(pBlock, startPos, endPos - startPos);
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taosArrayPush(createdBlocks, &block);
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createdNewBlock = true;
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}
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SRowLocation location = {0};
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for (int32_t j = startPos; j < endPos; ++j) {
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location.pDataBlock = block;
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location.pos = (createdNewBlock ? j - startPos : j);
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taosArrayPush(rowLocations, &location);
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}
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return 0;
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}
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// whichChild == 0, left child of join; whichChild ==1, right child of join
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static int32_t mergeJoinGetDownStreamRowsEqualTimeStamp(SOperatorInfo* pOperator, int32_t whichChild, int16_t tsSlotId,
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SSDataBlock* startDataBlock, int32_t startPos,
|
|
int64_t timestamp, SArray* rowLocations,
|
|
SArray* createdBlocks) {
|
|
ASSERT(whichChild == 0 || whichChild == 1);
|
|
|
|
SMJoinOperatorInfo* pJoinInfo = pOperator->info;
|
|
int32_t endPos = -1;
|
|
SSDataBlock* dataBlock = startDataBlock;
|
|
mergeJoinGetBlockRowsEqualTs(dataBlock, tsSlotId, startPos, timestamp, &endPos, rowLocations, createdBlocks);
|
|
while (endPos == dataBlock->info.rows) {
|
|
SOperatorInfo* ds = pOperator->pDownstream[whichChild];
|
|
dataBlock = getNextBlockFromDownstream(pOperator, whichChild);
|
|
qError("merge join %s got block for same ts, rows:%" PRId64, whichChild == 0 ? "left" : "right", dataBlock ? dataBlock->info.rows : 0);
|
|
if (whichChild == 0) {
|
|
pJoinInfo->leftPos = 0;
|
|
pJoinInfo->pLeft = dataBlock;
|
|
} else if (whichChild == 1) {
|
|
pJoinInfo->rightPos = 0;
|
|
pJoinInfo->pRight = dataBlock;
|
|
}
|
|
|
|
if (dataBlock == NULL) {
|
|
pJoinInfo->downstreamFetchDone[whichChild] = true;
|
|
endPos = -1;
|
|
break;
|
|
}
|
|
|
|
mergeJoinGetBlockRowsEqualTs(dataBlock, tsSlotId, 0, timestamp, &endPos, rowLocations, createdBlocks);
|
|
}
|
|
if (endPos != -1) {
|
|
if (whichChild == 0) {
|
|
pJoinInfo->leftPos = endPos;
|
|
} else if (whichChild == 1) {
|
|
pJoinInfo->rightPos = endPos;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int32_t mergeJoinFillBuildTable(SMJoinOperatorInfo* pInfo, SArray* rightRowLocations) {
|
|
for (int32_t i = 0; i < taosArrayGetSize(rightRowLocations); ++i) {
|
|
SRowLocation* rightRow = taosArrayGet(rightRowLocations, i);
|
|
int32_t keyLen = fillKeyBufFromTagCols(pInfo->rightEqOnCondCols, rightRow->pDataBlock, rightRow->pos, pInfo->rightEqOnCondKeyBuf);
|
|
SArray** ppRows = tSimpleHashGet(pInfo->rightBuildTable, pInfo->rightEqOnCondKeyBuf, keyLen);
|
|
if (!ppRows) {
|
|
SArray* rows = taosArrayInit(4, sizeof(SRowLocation));
|
|
taosArrayPush(rows, rightRow);
|
|
tSimpleHashPut(pInfo->rightBuildTable, pInfo->rightEqOnCondKeyBuf, keyLen, &rows, POINTER_BYTES);
|
|
} else {
|
|
taosArrayPush(*ppRows, rightRow);
|
|
}
|
|
}
|
|
return TSDB_CODE_SUCCESS;
|
|
}
|
|
|
|
static int32_t mergeJoinLeftRowsRightRows(SOperatorInfo* pOperator, SSDataBlock* pRes, int32_t* nRows,
|
|
const SArray* leftRowLocations, int32_t leftRowIdx,
|
|
int32_t rightRowIdx, bool useBuildTableTSRange, SArray* rightRowLocations, bool* pReachThreshold) {
|
|
*pReachThreshold = false;
|
|
uint32_t limitRowNum = pOperator->resultInfo.threshold;
|
|
SMJoinOperatorInfo* pJoinInfo = pOperator->info;
|
|
size_t leftNumJoin = taosArrayGetSize(leftRowLocations);
|
|
|
|
int32_t i,j;
|
|
|
|
for (i = leftRowIdx; i < leftNumJoin; ++i, rightRowIdx = 0) {
|
|
SRowLocation* leftRow = taosArrayGet(leftRowLocations, i);
|
|
SArray* pRightRows = NULL;
|
|
if (useBuildTableTSRange) {
|
|
int32_t keyLen = fillKeyBufFromTagCols(pJoinInfo->leftEqOnCondCols, leftRow->pDataBlock, leftRow->pos, pJoinInfo->leftEqOnCondKeyBuf);
|
|
SArray** ppRightRows = tSimpleHashGet(pJoinInfo->rightBuildTable, pJoinInfo->leftEqOnCondKeyBuf, keyLen);
|
|
if (!ppRightRows) {
|
|
continue;
|
|
}
|
|
pRightRows = *ppRightRows;
|
|
} else {
|
|
pRightRows = rightRowLocations;
|
|
}
|
|
size_t rightRowsSize = taosArrayGetSize(pRightRows);
|
|
for (j = rightRowIdx; j < rightRowsSize; ++j) {
|
|
if (*nRows >= limitRowNum) {
|
|
*pReachThreshold = true;
|
|
break;
|
|
}
|
|
|
|
SRowLocation* rightRow = taosArrayGet(pRightRows, j);
|
|
mergeJoinJoinLeftRight(pOperator, pRes, *nRows, leftRow->pDataBlock, leftRow->pos, rightRow->pDataBlock,
|
|
rightRow->pos);
|
|
++*nRows;
|
|
}
|
|
if (*pReachThreshold) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (*pReachThreshold) {
|
|
pJoinInfo->rowCtx.rowRemains = true;
|
|
pJoinInfo->rowCtx.leftRowIdx = i;
|
|
pJoinInfo->rowCtx.rightRowIdx = j;
|
|
}
|
|
return TSDB_CODE_SUCCESS;
|
|
}
|
|
|
|
static void mergeJoinDestroyTSRangeCtx(SMJoinOperatorInfo* pJoinInfo, SArray* leftRowLocations, SArray* leftCreatedBlocks,
|
|
SArray* rightCreatedBlocks, bool rightUseBuildTable, SArray* rightRowLocations) {
|
|
for (int i = 0; i < taosArrayGetSize(rightCreatedBlocks); ++i) {
|
|
SSDataBlock* pBlock = taosArrayGetP(rightCreatedBlocks, i);
|
|
blockDataDestroy(pBlock);
|
|
}
|
|
taosArrayDestroy(rightCreatedBlocks);
|
|
for (int i = 0; i < taosArrayGetSize(leftCreatedBlocks); ++i) {
|
|
SSDataBlock* pBlock = taosArrayGetP(leftCreatedBlocks, i);
|
|
blockDataDestroy(pBlock);
|
|
}
|
|
if (rightRowLocations != NULL) {
|
|
taosArrayDestroy(rightRowLocations);
|
|
}
|
|
if (rightUseBuildTable) {
|
|
void* p = NULL;
|
|
int32_t iter = 0;
|
|
while ((p = tSimpleHashIterate(pJoinInfo->rightBuildTable, p, &iter)) != NULL) {
|
|
SArray* rows = (*(SArray**)p);
|
|
taosArrayDestroy(rows);
|
|
}
|
|
tSimpleHashClear(pJoinInfo->rightBuildTable);
|
|
}
|
|
|
|
taosArrayDestroy(leftCreatedBlocks);
|
|
taosArrayDestroy(leftRowLocations);
|
|
|
|
pJoinInfo->rowCtx.rowRemains = false;
|
|
pJoinInfo->rowCtx.leftRowLocations = NULL;
|
|
pJoinInfo->rowCtx.leftCreatedBlocks = NULL;
|
|
pJoinInfo->rowCtx.rightCreatedBlocks = NULL;
|
|
pJoinInfo->rowCtx.rightUseBuildTable = false;
|
|
pJoinInfo->rowCtx.rightRowLocations = NULL;
|
|
}
|
|
|
|
static int32_t mergeJoinJoinDownstreamTsRanges(SOperatorInfo* pOperator, int64_t timestamp, SSDataBlock* pRes,
|
|
int32_t* nRows) {
|
|
int32_t code = TSDB_CODE_SUCCESS;
|
|
SMJoinOperatorInfo* pJoinInfo = pOperator->info;
|
|
SArray* leftRowLocations = NULL;
|
|
SArray* rightRowLocations = NULL;
|
|
SArray* leftCreatedBlocks = NULL;
|
|
SArray* rightCreatedBlocks = NULL;
|
|
int32_t leftRowIdx = 0;
|
|
int32_t rightRowIdx = 0;
|
|
SSHashObj* rightTableHash = NULL;
|
|
bool rightUseBuildTable = false;
|
|
|
|
if (pJoinInfo->rowCtx.rowRemains) {
|
|
leftRowLocations = pJoinInfo->rowCtx.leftRowLocations;
|
|
leftCreatedBlocks = pJoinInfo->rowCtx.leftCreatedBlocks;
|
|
rightUseBuildTable = pJoinInfo->rowCtx.rightUseBuildTable;
|
|
rightRowLocations = pJoinInfo->rowCtx.rightRowLocations;
|
|
rightCreatedBlocks = pJoinInfo->rowCtx.rightCreatedBlocks;
|
|
leftRowIdx = pJoinInfo->rowCtx.leftRowIdx;
|
|
rightRowIdx = pJoinInfo->rowCtx.rightRowIdx;
|
|
} else {
|
|
leftRowLocations = taosArrayInit(8, sizeof(SRowLocation));
|
|
leftCreatedBlocks = taosArrayInit(8, POINTER_BYTES);
|
|
|
|
rightRowLocations = taosArrayInit(8, sizeof(SRowLocation));
|
|
rightCreatedBlocks = taosArrayInit(8, POINTER_BYTES);
|
|
|
|
mergeJoinGetDownStreamRowsEqualTimeStamp(pOperator, 0, pJoinInfo->leftCol.slotId, pJoinInfo->pLeft,
|
|
pJoinInfo->leftPos, timestamp, leftRowLocations, leftCreatedBlocks);
|
|
mergeJoinGetDownStreamRowsEqualTimeStamp(pOperator, 1, pJoinInfo->rightCol.slotId, pJoinInfo->pRight,
|
|
pJoinInfo->rightPos, timestamp, rightRowLocations, rightCreatedBlocks);
|
|
if (pJoinInfo->pColEqualOnConditions != NULL && taosArrayGetSize(rightRowLocations) > 16) {
|
|
mergeJoinFillBuildTable(pJoinInfo, rightRowLocations);
|
|
rightUseBuildTable = true;
|
|
taosArrayDestroy(rightRowLocations);
|
|
rightRowLocations = NULL;
|
|
}
|
|
}
|
|
|
|
size_t leftNumJoin = taosArrayGetSize(leftRowLocations);
|
|
code = blockDataEnsureCapacity(pRes, pOperator->resultInfo.threshold);
|
|
if (code != TSDB_CODE_SUCCESS) {
|
|
qError("%s can not ensure block capacity for join. left: %zu", GET_TASKID(pOperator->pTaskInfo),
|
|
leftNumJoin);
|
|
}
|
|
|
|
bool reachThreshold = false;
|
|
|
|
if (code == TSDB_CODE_SUCCESS) {
|
|
mergeJoinLeftRowsRightRows(pOperator, pRes, nRows, leftRowLocations, leftRowIdx,
|
|
rightRowIdx, rightUseBuildTable, rightRowLocations, &reachThreshold);
|
|
}
|
|
|
|
if (!reachThreshold) {
|
|
mergeJoinDestroyTSRangeCtx(pJoinInfo, leftRowLocations, leftCreatedBlocks, rightCreatedBlocks,
|
|
rightUseBuildTable, rightRowLocations);
|
|
|
|
} else {
|
|
pJoinInfo->rowCtx.rowRemains = true;
|
|
pJoinInfo->rowCtx.ts = timestamp;
|
|
pJoinInfo->rowCtx.leftRowLocations = leftRowLocations;
|
|
pJoinInfo->rowCtx.leftCreatedBlocks = leftCreatedBlocks;
|
|
pJoinInfo->rowCtx.rightCreatedBlocks = rightCreatedBlocks;
|
|
pJoinInfo->rowCtx.rightUseBuildTable = rightUseBuildTable;
|
|
pJoinInfo->rowCtx.rightRowLocations = rightRowLocations;
|
|
}
|
|
return TSDB_CODE_SUCCESS;
|
|
}
|
|
|
|
static void setMergeJoinDone(SOperatorInfo* pOperator) {
|
|
pOperator->status = OP_EXEC_DONE;
|
|
pOperator->pDownstreamGetParams[0] = NULL;
|
|
pOperator->pDownstreamGetParams[1] = NULL;
|
|
}
|
|
|
|
static bool mergeJoinGetNextTimestamp(SOperatorInfo* pOperator, int64_t* pLeftTs, int64_t* pRightTs) {
|
|
SMJoinOperatorInfo* pJoinInfo = pOperator->info;
|
|
bool leftEmpty = false;
|
|
|
|
if (pJoinInfo->pLeft == NULL || pJoinInfo->leftPos >= pJoinInfo->pLeft->info.rows) {
|
|
if (!pJoinInfo->downstreamFetchDone[0]) {
|
|
pJoinInfo->pLeft = getNextBlockFromDownstream(pOperator, 0);
|
|
|
|
pJoinInfo->leftPos = 0;
|
|
qError("merge join left got block, rows:%" PRId64, pJoinInfo->pLeft ? pJoinInfo->pLeft->info.rows : 0);
|
|
} else {
|
|
pJoinInfo->pLeft = NULL;
|
|
}
|
|
|
|
if (pJoinInfo->pLeft == NULL) {
|
|
if (pOperator->pOperatorGetParam && ((SSortMergeJoinOperatorParam*)pOperator->pOperatorGetParam->value)->initParam) {
|
|
leftEmpty = true;
|
|
} else {
|
|
setMergeJoinDone(pOperator);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (pJoinInfo->pRight == NULL || pJoinInfo->rightPos >= pJoinInfo->pRight->info.rows) {
|
|
if (!pJoinInfo->downstreamFetchDone[1]) {
|
|
pJoinInfo->pRight = getNextBlockFromDownstream(pOperator, 1);
|
|
|
|
pJoinInfo->rightPos = 0;
|
|
qError("merge join right got block, rows:%" PRId64, pJoinInfo->pRight ? pJoinInfo->pRight->info.rows : 0);
|
|
} else {
|
|
pJoinInfo->pRight = NULL;
|
|
}
|
|
|
|
if (pJoinInfo->pRight == NULL) {
|
|
setMergeJoinDone(pOperator);
|
|
return false;
|
|
} else {
|
|
if (leftEmpty) {
|
|
setMergeJoinDone(pOperator);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// only the timestamp match support for ordinary table
|
|
SColumnInfoData* pLeftCol = taosArrayGet(pJoinInfo->pLeft->pDataBlock, pJoinInfo->leftCol.slotId);
|
|
char* pLeftVal = colDataGetData(pLeftCol, pJoinInfo->leftPos);
|
|
*pLeftTs = *(int64_t*)pLeftVal;
|
|
|
|
SColumnInfoData* pRightCol = taosArrayGet(pJoinInfo->pRight->pDataBlock, pJoinInfo->rightCol.slotId);
|
|
char* pRightVal = colDataGetData(pRightCol, pJoinInfo->rightPos);
|
|
*pRightTs = *(int64_t*)pRightVal;
|
|
|
|
return true;
|
|
}
|
|
|
|
static void doMergeJoinImpl(struct SOperatorInfo* pOperator, SSDataBlock* pRes) {
|
|
SMJoinOperatorInfo* pJoinInfo = pOperator->info;
|
|
|
|
int32_t nrows = pRes->info.rows;
|
|
|
|
bool asc = (pJoinInfo->inputOrder == TSDB_ORDER_ASC) ? true : false;
|
|
|
|
while (1) {
|
|
int64_t leftTs = 0;
|
|
int64_t rightTs = 0;
|
|
if (pJoinInfo->rowCtx.rowRemains) {
|
|
leftTs = pJoinInfo->rowCtx.ts;
|
|
rightTs = pJoinInfo->rowCtx.ts;
|
|
} else {
|
|
bool hasNextTs = mergeJoinGetNextTimestamp(pOperator, &leftTs, &rightTs);
|
|
if (!hasNextTs) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (leftTs == rightTs) {
|
|
mergeJoinJoinDownstreamTsRanges(pOperator, leftTs, pRes, &nrows);
|
|
} else if ((asc && leftTs < rightTs) || (!asc && leftTs > rightTs)) {
|
|
pJoinInfo->leftPos += 1;
|
|
|
|
if (pJoinInfo->leftPos >= pJoinInfo->pLeft->info.rows && pRes->info.rows < pOperator->resultInfo.threshold) {
|
|
continue;
|
|
}
|
|
} else if ((asc && leftTs > rightTs) || (!asc && leftTs < rightTs)) {
|
|
pJoinInfo->rightPos += 1;
|
|
if (pJoinInfo->rightPos >= pJoinInfo->pRight->info.rows && pRes->info.rows < pOperator->resultInfo.threshold) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// the pDataBlock are always the same one, no need to call this again
|
|
pRes->info.rows = nrows;
|
|
pRes->info.dataLoad = 1;
|
|
pRes->info.scanFlag = MAIN_SCAN;
|
|
if (pRes->info.rows >= pOperator->resultInfo.threshold) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void resetMergeJoinOperator(struct SOperatorInfo* pOperator) {
|
|
SMJoinOperatorInfo* pJoinInfo = pOperator->info;
|
|
if (pJoinInfo->rowCtx.rowRemains) {
|
|
mergeJoinDestroyTSRangeCtx(pJoinInfo, pJoinInfo->rowCtx.leftRowLocations, pJoinInfo->rowCtx.leftCreatedBlocks, pJoinInfo->rowCtx.rightCreatedBlocks,
|
|
pJoinInfo->rowCtx.rightUseBuildTable, pJoinInfo->rowCtx.rightRowLocations);
|
|
}
|
|
pJoinInfo->pLeft = NULL;
|
|
pJoinInfo->leftPos = 0;
|
|
pJoinInfo->pRight = NULL;
|
|
pJoinInfo->rightPos = 0;
|
|
pJoinInfo->downstreamFetchDone[0] = false;
|
|
pJoinInfo->downstreamFetchDone[1] = false;
|
|
pJoinInfo->resRows = 0;
|
|
pOperator->status = OP_OPENED;
|
|
}
|
|
|
|
SSDataBlock* doMergeJoin(struct SOperatorInfo* pOperator) {
|
|
SMJoinOperatorInfo* pJoinInfo = pOperator->info;
|
|
if (pOperator->status == OP_EXEC_DONE) {
|
|
if (NULL == pOperator->pDownstreamGetParams[0] || NULL == pOperator->pDownstreamGetParams[1]) {
|
|
qError("total merge join res rows:%" PRId64, pJoinInfo->resRows);
|
|
return NULL;
|
|
} else {
|
|
resetMergeJoinOperator(pOperator);
|
|
qError("start new merge join");
|
|
}
|
|
}
|
|
|
|
SSDataBlock* pRes = pJoinInfo->pRes;
|
|
blockDataCleanup(pRes);
|
|
|
|
while (true) {
|
|
int32_t numOfRowsBefore = pRes->info.rows;
|
|
doMergeJoinImpl(pOperator, pRes);
|
|
int32_t numOfNewRows = pRes->info.rows - numOfRowsBefore;
|
|
if (numOfNewRows == 0) {
|
|
break;
|
|
}
|
|
if (pOperator->exprSupp.pFilterInfo != NULL) {
|
|
doFilter(pRes, pOperator->exprSupp.pFilterInfo, NULL);
|
|
}
|
|
if (pRes->info.rows >= pOperator->resultInfo.threshold) {
|
|
break;
|
|
}
|
|
if (pOperator->status == OP_EXEC_DONE) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (pRes->info.rows > 0) {
|
|
pJoinInfo->resRows += pRes->info.rows;
|
|
qError("merge join returns res rows:%" PRId64, pRes->info.rows);
|
|
return pRes;
|
|
} else {
|
|
qError("total merge join res rows:%" PRId64, pJoinInfo->resRows);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
|