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407 lines
16 KiB
C++
407 lines
16 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_bulkrollbackfile.cpp 4737 2013-08-14 20:45:46Z bwilkinson $
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*/
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#include "we_bulkrollbackfile.h"
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#include "we_bulkrollbackmgr.h"
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#include <sstream>
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#include "we_define.h"
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#include "we_fileop.h"
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#include "messageids.h"
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#include "IDBDataFile.h"
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using namespace idbdatafile;
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using namespace execplan;
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namespace WriteEngine
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{
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//------------------------------------------------------------------------------
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// BulkRollbackFile constructor
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//------------------------------------------------------------------------------
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BulkRollbackFile::BulkRollbackFile(BulkRollbackMgr* mgr) : fMgr(mgr)
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{
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// Initialize empty dictionary header block used when reinitializing
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// dictionary store extents.
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const uint16_t freeSpace =
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BYTE_PER_BLOCK - (HDR_UNIT_SIZE + NEXT_PTR_BYTES + HDR_UNIT_SIZE + HDR_UNIT_SIZE);
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const uint64_t nextPtr = NOT_USED_PTR;
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const uint16_t offSetZero = BYTE_PER_BLOCK;
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const uint16_t endHeader = DCTNRY_END_HEADER;
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memcpy(fDctnryHdr, &freeSpace, HDR_UNIT_SIZE);
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memcpy(fDctnryHdr + HDR_UNIT_SIZE, &nextPtr, NEXT_PTR_BYTES);
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memcpy(fDctnryHdr + HDR_UNIT_SIZE + NEXT_PTR_BYTES, &offSetZero, HDR_UNIT_SIZE);
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memcpy(fDctnryHdr + HDR_UNIT_SIZE + NEXT_PTR_BYTES + HDR_UNIT_SIZE, &endHeader, HDR_UNIT_SIZE);
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}
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//------------------------------------------------------------------------------
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// BulkRollbackFile destructor
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//------------------------------------------------------------------------------
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BulkRollbackFile::~BulkRollbackFile()
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{
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}
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//------------------------------------------------------------------------------
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// Build the specified database segment file name.
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//
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// columnOID - OID of segment file to be found
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// fileTypeFlag - true -> column file; false -> dictionary store file
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// dbRoot - DBRoot of segment file to be found
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// partNum - Partition number of segment file to be found
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// segNum - Segment number of segment file to be found
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// segFileName (out) - Name of segment file
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//------------------------------------------------------------------------------
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void BulkRollbackFile::buildSegmentFileName(OID columnOID, bool fileTypeFlag, uint32_t dbRoot,
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uint32_t partNum, uint32_t segNum, std::string& segFileName)
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{
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char fileName[FILE_NAME_SIZE];
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int rc = fDbFile.getFileName(columnOID, fileName, dbRoot, partNum, segNum);
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if (rc != NO_ERROR)
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{
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WErrorCodes ec;
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std::ostringstream oss;
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oss << "Error constructing " << (fileTypeFlag ? "column" : "dictionary store") << " filename for deletion"
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<< "; columnOID-" << columnOID << "; dbRoot-" << dbRoot << "; partNum-" << partNum << "; segNum-"
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<< segNum << "; " << ec.errorString(rc);
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throw WeException(oss.str(), rc);
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}
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segFileName = fileName;
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}
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//------------------------------------------------------------------------------
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// Delete the specified database segment file.
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//
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// columnOID - OID of segment file to be deleted
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// fileTypeFlag - true -> column file; false -> dictionary store file
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// dbRoot - DBRoot of segment file to be deleted
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// partNum - Partition number of segment file to be deleted
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// segNum - Segment number of segment file to be deleted
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// segFileName - Name of file to be deleted
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//------------------------------------------------------------------------------
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void BulkRollbackFile::deleteSegmentFile(OID columnOID, bool fileTypeFlag, uint32_t dbRoot, uint32_t partNum,
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uint32_t segNum, const std::string& segFileName)
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{
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std::ostringstream msgText;
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msgText << "Deleting " << (fileTypeFlag ? "column" : "dictionary store") << " file: dbRoot-" << dbRoot
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<< "; part#-" << partNum << "; seg#-" << segNum;
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fMgr->logAMessage(logging::LOG_TYPE_INFO, logging::M0075, columnOID, msgText.str());
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// delete the db segment file if it exists
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int rc = fDbFile.deleteFile(segFileName.c_str());
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if (rc != NO_ERROR)
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{
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if (rc != ERR_FILE_NOT_EXIST)
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{
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WErrorCodes ec;
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std::ostringstream oss;
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oss << "Error deleting segment file"
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"; columnOID-"
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<< columnOID << "; dbRoot-" << dbRoot << "; partNum-" << partNum << "; segNum-" << segNum << "; "
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<< ec.errorString(rc);
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throw WeException(oss.str(), rc);
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}
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}
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}
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//------------------------------------------------------------------------------
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// Truncate the specified database segment file to the given file offset.
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//
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// columnOID - OID of segment file to be truncated
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// dbRoot - DBRoot of segment file to be truncated
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// partNum - Partition number of segment file to be truncated
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// segNum - Segment number of segment file to be truncated
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// fileSizeBlocks - Number of blocks to be left in the file. Remainder of file
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// is to be truncated.
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//------------------------------------------------------------------------------
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void BulkRollbackFile::truncateSegmentFile(OID columnOID, uint32_t dbRoot, uint32_t partNum, uint32_t segNum,
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long long fileSizeBlocks)
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{
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long long fileSizeBytes = fileSizeBlocks * BYTE_PER_BLOCK;
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std::ostringstream msgText;
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msgText << "Truncating column file"
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": dbRoot-"
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<< dbRoot << "; part#-" << partNum << "; seg#-" << segNum << "; totBlks-" << fileSizeBlocks
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<< "; fileSize(bytes)-" << fileSizeBytes;
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fMgr->logAMessage(logging::LOG_TYPE_INFO, logging::M0075, columnOID, msgText.str());
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std::string segFile;
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IDBDataFile* pFile = fDbFile.openFile(columnOID, dbRoot, partNum, segNum, segFile);
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if (pFile == 0)
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{
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std::ostringstream oss;
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oss << "Error opening column segment file to rollback extents "
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"from DB for"
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<< ": OID-" << columnOID << "; DbRoot-" << dbRoot << "; partition-" << partNum << "; segment-"
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<< segNum;
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throw WeException(oss.str(), ERR_FILE_OPEN);
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}
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int rc = fDbFile.truncateFile(pFile, fileSizeBytes);
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if (rc != NO_ERROR)
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{
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WErrorCodes ec;
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std::ostringstream oss;
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oss << "Error truncating column extents from DB for" << ": OID-" << columnOID << "; DbRoot-" << dbRoot
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<< "; partition-" << partNum << "; segment-" << segNum << "; " << ec.errorString(rc);
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fDbFile.closeFile(pFile);
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throw WeException(oss.str(), rc);
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}
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fDbFile.closeFile(pFile);
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}
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//------------------------------------------------------------------------------
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// Reinitialize a column segment extent (in the db file) to empty values,
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// following the HWM. Remaining extents in the file are truncated.
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//
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// columnOID - OID of segment file to be reinitialized
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// dbRoot - DBRoot of segment file to be reinitialized
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// partNum - Partition number of segment file to be reinitialized
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// segNum - Segment number of segment file to be reinitialized
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// startOffsetBlk - File offset (after the HWM block), at which the file is
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// to be reinitialized. Value is in blocks.
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// nBlocks - Number of blocks to be reinitialized
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// colType - Data type of the applicable column
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// colWidth - Width in bytes, of the applicable column
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// restoreHwmChk - Specifies whether HWM chunk is to be restored. n/a for
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// uncompressed, but defined in this base class for the
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// compressed derived class.
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//------------------------------------------------------------------------------
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void BulkRollbackFile::reInitTruncColumnExtent(OID columnOID, uint32_t dbRoot, uint32_t partNum,
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uint32_t segNum, long long startOffsetBlk, int nBlocks,
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CalpontSystemCatalog::ColDataType colType, uint32_t colWidth,
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bool /*restoreHwmChk*/)
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{
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long long startOffset = startOffsetBlk * BYTE_PER_BLOCK;
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std::ostringstream msgText;
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msgText << "Reinit HWM column extent in db file"
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": dbRoot-"
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<< dbRoot << "; part#-" << partNum << "; seg#-" << segNum << "; offset(bytes)-" << startOffset
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<< "; freeBlks-" << nBlocks;
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fMgr->logAMessage(logging::LOG_TYPE_INFO, logging::M0075, columnOID, msgText.str());
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std::string segFile;
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IDBDataFile* pFile = fDbFile.openFile(columnOID, dbRoot, partNum, segNum, segFile);
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if (pFile == 0)
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{
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std::ostringstream oss;
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oss << "Error opening HWM column segment file to rollback extents "
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"from DB for"
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<< ": OID-" << columnOID << "; DbRoot-" << dbRoot << "; partition-" << partNum << "; segment-"
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<< segNum;
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throw WeException(oss.str(), ERR_FILE_OPEN);
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}
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// nBlocks is based on full extents, but if the database file only has an
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// abbreviated extent, then we reset nBlocks to reflect the size of the file
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// (Only the 1st extent in part0, seg0 employs an abbreviated extent.)
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// DMC-SHARED_NOTHING_NOTE: Is it safe to assume only part0 seg0 is abbreviated?
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if ((partNum == 0) && (segNum == 0))
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{
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long long nBytesInAbbrevExtent = INITIAL_EXTENT_ROWS_TO_DISK * colWidth;
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if (startOffset <= nBytesInAbbrevExtent)
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{
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// This check would prevent us from truncating back to an
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// abbreviated extent if the failed import expanded the initial
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// extent; but when adding compression, decided to go ahead and
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// truncate back to an abbreviated extent.
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// long long fileSizeBytes;
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// int rc = fDbFile.getFileSize2(pFile,fileSizeBytes);
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// if (fileSizeBytes == nBytesInAbbrevExtent)
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{
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nBlocks = (nBytesInAbbrevExtent - startOffset) / BYTE_PER_BLOCK;
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std::ostringstream msgText2;
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msgText2 << "Reinit (abbrev) HWM column extent in db file"
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": dbRoot-"
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<< dbRoot << "; part#-" << partNum << "; seg#-" << segNum << "; offset(bytes)-"
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<< startOffset << "; freeBlks-" << nBlocks;
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fMgr->logAMessage(logging::LOG_TYPE_INFO, logging::M0075, columnOID, msgText2.str());
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}
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}
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}
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// Initialize the remainder of the extent after the HWM block
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const uint8_t* emptyVal = fDbFile.getEmptyRowValue(colType, colWidth);
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int rc = fDbFile.reInitPartialColumnExtent(pFile, startOffset, nBlocks, emptyVal, colWidth);
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if (rc != NO_ERROR)
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{
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WErrorCodes ec;
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std::ostringstream oss;
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oss << "Error rolling back HWM column extent from DB for" << ": OID-" << columnOID << "; DbRoot-"
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<< dbRoot << "; partition-" << partNum << "; segment-" << segNum << "; " << ec.errorString(rc);
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fDbFile.closeFile(pFile);
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throw WeException(oss.str(), rc);
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}
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// Truncate the remainder of the file
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rc = fDbFile.truncateFile(pFile, pFile->tell());
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if (rc != NO_ERROR)
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{
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WErrorCodes ec;
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std::ostringstream oss;
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oss << "Error truncating post-HWM column extents "
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"from HWM segment DB file for"
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<< ": OID-" << columnOID << "; DbRoot-" << dbRoot << "; partition-" << partNum << "; segment-"
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<< segNum << "; " << ec.errorString(rc);
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fDbFile.closeFile(pFile);
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throw WeException(oss.str(), rc);
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}
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fDbFile.closeFile(pFile);
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}
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//------------------------------------------------------------------------------
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// Reinitialize a dictionary segment extent (in the db file) to empty blocks,
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// following the HWM. Remaining extents in the file are truncated.
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//
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// dStoreOID - OID of segment store file to be reinitialized
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// dbRoot - DBRoot of segment file to be reinitialized
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// partNum - Partition number of segment file to be reinitialized
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// segNum - Segment number of segment file to be reinitialized
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// startOffsetBlk - Starting block (after the HWM block), at which the file is
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// to be reinitialized. Value is in raw data blocks.
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// nBlocks - Number of blocks to be reinitialized
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//------------------------------------------------------------------------------
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void BulkRollbackFile::reInitTruncDctnryExtent(OID dStoreOID, uint32_t dbRoot, uint32_t partNum,
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uint32_t segNum, long long startOffsetBlk, int nBlocks)
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{
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long long startOffset = startOffsetBlk * BYTE_PER_BLOCK;
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std::ostringstream msgText;
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msgText << "Reinit dictionary store extent in db file"
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": dbRoot-"
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<< dbRoot << "; part#-" << partNum << "; seg#-" << segNum << "; offset(bytes)-" << startOffset
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<< "; numblks-" << nBlocks;
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fMgr->logAMessage(logging::LOG_TYPE_INFO, logging::M0075, dStoreOID, msgText.str());
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std::string segFile;
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IDBDataFile* pFile = fDbFile.openFile(dStoreOID, dbRoot, partNum, segNum, segFile);
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if (pFile == 0)
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{
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std::ostringstream oss;
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oss << "Error opening dictionary store segment file to rollback extents"
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" from DB for"
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<< ": OID-" << dStoreOID << "; DbRoot-" << dbRoot << "; partition-" << partNum << "; segment-"
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<< segNum;
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throw WeException(oss.str(), ERR_FILE_OPEN);
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}
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// nBlocks is based on full extents, but if the database file only has an
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// abbreviated extent, then we reset nBlocks to reflect the size of the file
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// (Unlike column files which only employ an abbreviated extent for the
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// 1st extent in part0, seg0, all new store files start with abbrev extent)
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const uint32_t PSEUDO_COL_WIDTH = 8; // simulated col width for dictionary
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long long nBytesInAbbrevExtent = INITIAL_EXTENT_ROWS_TO_DISK * PSEUDO_COL_WIDTH;
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if (startOffset <= nBytesInAbbrevExtent)
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{
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// This check would prevent us from truncating back to an
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// abbreviated extent if the failed import expanded the initial
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// extent; but when adding compression, decided to go ahead and
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// truncate back to an abbreviated extent.
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// long long fileSizeBytes;
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// int rc = fDbFile.getFileSize2(pFile,fileSizeBytes);
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// if (fileSizeBytes == nBytesInAbbrevExtent)
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{
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nBlocks = (nBytesInAbbrevExtent - startOffset) / BYTE_PER_BLOCK;
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std::ostringstream msgText2;
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msgText2 << "Reinit (abbrev) dictionary store extent in db file"
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": dbRoot-"
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<< dbRoot << "; part#-" << partNum << "; seg#-" << segNum << "; offset(bytes)-" << startOffset
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<< "; numblks-" << nBlocks;
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fMgr->logAMessage(logging::LOG_TYPE_INFO, logging::M0075, dStoreOID, msgText2.str());
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}
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}
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// Initialize the remainder of the extent after the HWM block
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int rc = fDbFile.reInitPartialDctnryExtent(pFile, startOffset, nBlocks, fDctnryHdr, DCTNRY_HEADER_SIZE);
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if (rc != NO_ERROR)
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{
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WErrorCodes ec;
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std::ostringstream oss;
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oss << "Error rolling back HWM dictionary store extent from DB for" << ": OID-" << dStoreOID
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<< "; DbRoot-" << dbRoot << "; partition-" << partNum << "; segment-" << segNum << "; "
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<< ec.errorString(rc);
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fDbFile.closeFile(pFile);
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throw WeException(oss.str(), rc);
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}
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// Truncate the remainder of the file
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rc = fDbFile.truncateFile(pFile, pFile->tell());
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if (rc != NO_ERROR)
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{
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WErrorCodes ec;
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std::ostringstream oss;
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oss << "Error truncating post-HWM dictionary store extents "
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"from DB file for"
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<< ": OID-" << dStoreOID << "; DbRoot-" << dbRoot << "; partition-" << partNum << "; segment-"
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<< segNum << "; " << ec.errorString(rc);
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fDbFile.closeFile(pFile);
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throw WeException(oss.str(), rc);
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}
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fDbFile.closeFile(pFile);
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}
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//------------------------------------------------------------------------------
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// For uncompressed data...
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// Always return true, in order to always reInit the post-HWM blocks for the
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// HWM extent to empty values.
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// This function is defined as a stub, so that the derived compression
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// class can override this functionality, and return true or false depending
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// on whether the HWM chunk was modified and backed up to disk.
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//------------------------------------------------------------------------------
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bool BulkRollbackFile::doWeReInitExtent(OID /*columnOID*/, uint32_t /*dbRoot*/, uint32_t /*partNum*/,
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uint32_t /*segNum*/) const
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{
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return true;
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}
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} // namespace WriteEngine
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