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MCOL-4753 Performance problem in Typeless join

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This commit is contained in:
Alexander Barkov
2021-06-09 09:56:20 +04:00
committed by Roman Nozdrin
parent c6d0b46bc6
commit b3d6f62964
5 changed files with 104 additions and 172 deletions
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11
utils/joiner/tuplejoiner.h
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@ -49,8 +49,10 @@ class TypelessData
public:
uint8_t* data;
uint32_t len;
const rowgroup::Row *mRowPtr;
TypelessData() : data(NULL), len(0) { }
TypelessData() : data(NULL), len(0), mRowPtr(nullptr) { }
TypelessData(const rowgroup::Row *rowPtr) : data(NULL), len(0), mRowPtr(rowPtr) { }
inline bool operator==(const TypelessData&) const;
void serialize(messageqcpp::ByteStream&) const;
void deserialize(messageqcpp::ByteStream&, utils::FixedAllocator&);
@ -60,6 +62,8 @@ public:
static int cmp(const rowgroup::RowGroup&, const std::vector<uint32_t>& keyCols,
const TypelessData &a,
const TypelessData &b);
int cmpToRow(const rowgroup::RowGroup& r, const std::vector<uint32_t>& keyCols,
const rowgroup::Row &db) const;
};
inline bool TypelessData::operator==(const TypelessData& t) const
@ -88,15 +92,10 @@ public:
* key is limited by keylen. Keys that are longer are assigned a length of 0 on return,
* signifying that it shouldn't match anything.
*/
extern TypelessData makeTypelessKey(const rowgroup::Row&,
const std::vector<uint32_t>&, uint32_t keylen, utils::FixedAllocator* fa);
// MCOL-1822 SUM/AVG as long double: pass in RG and col so we can determine type conversion
extern TypelessData makeTypelessKey(const rowgroup::Row&,
const std::vector<uint32_t>&, uint32_t keylen, utils::FixedAllocator* fa,
const rowgroup::RowGroup&, const std::vector<uint32_t>&);
extern TypelessData makeTypelessKey(const rowgroup::Row&,
const std::vector<uint32_t>&, utils::PoolAllocator* fa,
const rowgroup::RowGroup&, const std::vector<uint32_t>&);
extern uint64_t getHashOfTypelessKey(const rowgroup::Row&, const std::vector<uint32_t>&,
uint32_t seed = 0);