database/mariadb-columnstore-engine
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Reapply "fix(aggregation, disk-based) MCOL-5691 distinct aggregate disk based (#3145)"

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This reverts commit a5c12b98d7.
This commit is contained in:
Aleksei Antipovskii
2024-12-06 11:32:36 +01:00
committed by drrtuy
parent 5e5d328269
commit e0a01c6cf4
7 changed files with 417 additions and 144 deletions
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12
utils/rowgroup/rowstorage.h
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@ -20,6 +20,7 @@
#include "resourcemanager.h"
#include "rowgroup.h"
#include "idbcompress.h"
#include <cstdint>
#include <random>
#include <sys/stat.h>
#include <unistd.h>
@ -35,10 +36,15 @@ class RowPosHashStorage;
using RowPosHashStoragePtr = std::unique_ptr<RowPosHashStorage>;
class RowGroupStorage;
using RGDataUnPtr = std::unique_ptr<RGData>;
using PosOpos = std::pair<uint64_t, uint64_t>;
using FgidTgid = std::pair<uint64_t, uint64_t>;
uint64_t hashRow(const rowgroup::Row& r, std::size_t lastCol);
constexpr const size_t MaxConstStrSize = 2048ULL;
constexpr const size_t MaxConstStrBufSize = MaxConstStrSize << 1;
constexpr const uint64_t HashMaskElements = 64ULL;
class RowAggStorage
{
@ -97,6 +103,12 @@ class RowAggStorage
*/
std::unique_ptr<RGData> getNextRGData();
/** @brief Remove last RGData from in-memory storage or disk.
* Iterates over all generations on disk if available.
* @returns True if RGData is returned in parameter or false if no more RGDatas can be returned.
*/
bool getNextOutputRGData(std::unique_ptr<RGData>& rgdata);
/** @brief TODO
*
* @param mergeFunc