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https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
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60eb0f86ec
the DELETE operation. ColumnOp::readBlock() calls can cause writes to database files when the active chunk list in ChunkManager is full. Since non-AUX columns are read-only for the DELETE operation, we prevent writes of compressed chunks and header for these columns by passing an isReadOnly flag to CompFileData which indicates whether the column is read-only or read-write.
113 lines
3.9 KiB
C++
113 lines
3.9 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/*****************************************************************************
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* $Id: we_colopbulk.cpp 4726 2013-08-07 03:38:36Z bwilkinson $
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*
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****************************************************************************/
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/** @file
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* Implementation of the ColumnOpBulk class
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*
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*/
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#include "we_colopbulk.h"
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#include <exception>
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#include "we_type.h"
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#include "we_log.h"
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namespace WriteEngine
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{
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//------------------------------------------------------------------------------
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// Default ColumnOpBulk constructor
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//------------------------------------------------------------------------------
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ColumnOpBulk::ColumnOpBulk()
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{
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m_compressionType = 0;
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}
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//------------------------------------------------------------------------------
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// Alternate ColumnOpBulk Constructor
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//------------------------------------------------------------------------------
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ColumnOpBulk::ColumnOpBulk(Log* logger, int compressionType) : ColumnOp(logger)
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{
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m_compressionType = compressionType;
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}
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//------------------------------------------------------------------------------
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// ColumnOpBulk Destructor
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//------------------------------------------------------------------------------
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ColumnOpBulk::~ColumnOpBulk()
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{
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}
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//------------------------------------------------------------------------------
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// Open specified column file
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//------------------------------------------------------------------------------
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// @bug 5572 - HDFS usage: add *.tmp file backup flag
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IDBDataFile* ColumnOpBulk::openFile(const WriteEngine::Column& column, uint16_t dbRoot, uint32_t partition,
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uint16_t segment, std::string& segFile, bool useTmpSuffix,
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const char* mode, int ioBuffSize, bool isReadOnly) const
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{
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return FileOp::openFile(column.dataFile.fid, dbRoot, partition, segment, segFile, mode, column.colWidth,
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useTmpSuffix);
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}
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//------------------------------------------------------------------------------
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// Stub for abbreviatedExtent
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//------------------------------------------------------------------------------
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bool ColumnOpBulk::abbreviatedExtent(IDBDataFile*, int) const
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{
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throw std::logic_error("Unauthorized use of ColumnOpBulk::abbreviatedExtent");
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return false;
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}
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//------------------------------------------------------------------------------
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// Stub for blocksInFile
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//------------------------------------------------------------------------------
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int ColumnOpBulk::blocksInFile(IDBDataFile*) const
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{
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throw std::logic_error("Unauthorized use of ColumnOpBulk::blocksInFile");
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return 0;
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}
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//------------------------------------------------------------------------------
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// Stub for readBlock
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//------------------------------------------------------------------------------
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int ColumnOpBulk::readBlock(IDBDataFile*, unsigned char*, const uint64_t)
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{
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throw std::logic_error("Unauthorized use of ColumnOpBulk::readBlock");
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return 0;
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}
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//------------------------------------------------------------------------------
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// Stub for writeBlock
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//------------------------------------------------------------------------------
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int ColumnOpBulk::saveBlock(IDBDataFile*, const unsigned char*, const uint64_t)
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{
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throw std::logic_error("Unauthorized use of ColumnOpBulk::saveBlock");
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return 0;
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}
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} // namespace WriteEngine
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