You've already forked mariadb-columnstore-engine
mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-10-30 07:25:34 +03:00
134 lines
4.0 KiB
C++
134 lines
4.0 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; version 2 of
|
|
the License.
|
|
|
|
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. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
/*
|
|
* $Id: we_dbrootextenttracker.h 3672 2012-03-26 12:31:27Z rdempsey $
|
|
*/
|
|
|
|
/** @file we_dbrootextenttracker.h
|
|
* Contains classes to track the order of placement (rotation) of extents as
|
|
* they are filled in and/or added to the DBRoots for the local PM.
|
|
*/
|
|
|
|
#ifndef BATCHLOADER_H_
|
|
#define BATCHLOADER_H_
|
|
|
|
#include <vector>
|
|
#include "oamcache.h"
|
|
#include "brmtypes.h"
|
|
#include "calpontsystemcatalog.h"
|
|
|
|
namespace batchloader
|
|
{
|
|
|
|
//------------------------------------------------------------------------------
|
|
/** @brief Class to find the PM id to send a batch of row
|
|
*/
|
|
//------------------------------------------------------------------------------
|
|
class BatchLoader
|
|
{
|
|
public:
|
|
|
|
/** @brief BatchLoader constructor
|
|
* @param tableOid table OID of interest.
|
|
* @param sessionId cpimport use 0 as session id.
|
|
* @param PMs vector Collection of PM ids.
|
|
*/
|
|
BatchLoader ( uint32_t tableOid, execplan::CalpontSystemCatalog::SCN sessionId, std::vector<uint32_t>& PMs);
|
|
|
|
/**
|
|
* @brief select the Next PM where batch data to be distributed.
|
|
* return the PM where next batch to be send.
|
|
* if an error occurs, 0 will be returned
|
|
*/
|
|
uint32_t selectNextPM();
|
|
|
|
/**
|
|
* @brief Move to previous Sequence in the array.
|
|
* This can be used when we find that we cannot use the PM right now
|
|
* and want to use it later. for example the queue is full of the
|
|
* current PM and we want to get the same PM Id when we call selectNextPM()
|
|
* next time also.
|
|
*/
|
|
void reverseSequence();
|
|
|
|
/*
|
|
* @brief After calling selectFirstPM(), if we need to keep continuing to
|
|
* the next PM in the list, we need to call this. If we just want to start
|
|
* distributing from dbroot 1 onwards, no need to call this function.
|
|
*/
|
|
void prepareForSecondPM();
|
|
|
|
struct RootExtentsBlocks
|
|
{
|
|
/** @brief the dbroot
|
|
*/
|
|
uint32_t DBRoot;
|
|
/** @brief the number of extents
|
|
*/
|
|
uint64_t numExtents;
|
|
/** @brief the number of blocks in the last partition
|
|
*/
|
|
uint64_t numBlocks;
|
|
};
|
|
|
|
struct PMRootInfo
|
|
{
|
|
/** @brief the module id
|
|
*/
|
|
uint32_t PMId;
|
|
/** @brief the dbroot info
|
|
*/
|
|
std::vector<RootExtentsBlocks> rootInfo;
|
|
};
|
|
|
|
private:
|
|
/** @brief Select the first PM to send the first batch of rows.
|
|
* @param startFromNextPM - if true, don't use the PMId. Instead use the next one in the sorted dmList.
|
|
* @param PMId - The PM id to send the first batch of rows if startFromNextPM is false.
|
|
* @return Returns 0 if success, else returns error code.
|
|
*/
|
|
void selectFirstPM ( uint32_t& PMId);
|
|
|
|
/** @brief build the batch distribution sequence in a vector
|
|
* return void
|
|
*/
|
|
void buildBatchDistSeqVector();
|
|
|
|
/** @brief build the batch distribution sequence in a vector
|
|
* return void
|
|
*/
|
|
void buildBatchDistSeqVector(uint32_t StartPm);
|
|
|
|
typedef std::vector<uint32_t> BlIntVec;
|
|
BlIntVec fPMs;
|
|
BlIntVec fDbRoots;
|
|
BlIntVec fPmDistSeq;
|
|
uint32_t fNextIdx;
|
|
uint32_t fFirstPm;
|
|
execplan::CalpontSystemCatalog::SCN fSessionId;
|
|
uint32_t fTableOid;
|
|
oam::OamCache::PMDbrootsMap_t fPmDbrootMap;
|
|
oam::OamCache::dbRootPMMap_t fDbrootPMmap;
|
|
};
|
|
|
|
} //end of namespace
|
|
|
|
#undef EXPORT
|
|
|
|
#endif // WE_DBROOTEXTENTTRACKER_H_
|