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573 lines
21 KiB
C++
573 lines
21 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_columninfocompressed.cpp 4726 2013-08-07 03:38:36Z bwilkinson $
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*
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*******************************************************************************/
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#include "we_columninfocompressed.h"
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#include "we_define.h"
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#include "we_log.h"
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#include "we_type.h"
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#include "we_rbmetawriter.h"
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#include "we_stats.h"
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#include "we_tableinfo.h"
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#include "idbcompress.h"
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using namespace compress;
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#include "IDBFileSystem.h"
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#include <iostream>
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namespace WriteEngine
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{
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//------------------------------------------------------------------------------
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// ColumnInfoCompressed constructor
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//------------------------------------------------------------------------------
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ColumnInfoCompressed::ColumnInfoCompressed(Log* logger,
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int idIn,
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const JobColumn& columnIn,
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DBRootExtentTracker* pDBRootExtTrk,
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TableInfo* pTableInfo):
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//RBMetaWriter* rbMetaWriter) :
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ColumnInfo(logger, idIn, columnIn, pDBRootExtTrk, pTableInfo),
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fRBMetaWriter(pTableInfo->rbMetaWriter())
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{
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}
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//------------------------------------------------------------------------------
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// ColumnInfoCompressed destructor
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//------------------------------------------------------------------------------
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ColumnInfoCompressed::~ColumnInfoCompressed()
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{
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}
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//------------------------------------------------------------------------------
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// Close the current compressed Column file after first compressing/flushing
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// any remaining data, and re-writing the headers as well.
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//------------------------------------------------------------------------------
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int ColumnInfoCompressed::closeColumnFile(bool bCompletingExtent, bool bAbort)
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{
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int rc = NO_ERROR;
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if ( curCol.dataFile.pFile )
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{
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if (!bAbort)
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{
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// If we are opening and closing a file in order to add an extent as
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// part of preliminary block skipping, then we won't have a Column-
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// BufferManger object yet. One will be created when the file is
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// reopened to begin importing.
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if (fColBufferMgr)
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{
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rc = fColBufferMgr->finishFile( bCompletingExtent );
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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 closing compressed file; OID-" <<
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curCol.dataFile.fid <<
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"; DBRoot-" << curCol.dataFile.fDbRoot <<
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"; part-" << curCol.dataFile.fPartition <<
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"; seg-" << curCol.dataFile.fSegment <<
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"; " << ec.errorString(rc);
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fLog->logMsg( oss.str(), rc, MSGLVL_ERROR );
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bAbort = true;
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}
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}
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}
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ColumnInfo::closeColumnFile(bCompletingExtent, bAbort);
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}
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return rc;
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}
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//------------------------------------------------------------------------------
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// Prepare the initial compressed column segment file for import.
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//------------------------------------------------------------------------------
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int ColumnInfoCompressed::setupInitialColumnFile( HWM oldHwm, HWM hwm )
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{
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char hdr[ compress::IDBCompressInterface::HDR_BUF_LEN * 2 ];
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RETURN_ON_ERROR( colOp->readHeaders(curCol.dataFile.pFile, hdr) );
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// Initialize the output buffer manager for the column.
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WriteEngine::ColumnBufferManager* mgr;
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if (column.colType == COL_TYPE_DICT)
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{
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mgr = new ColumnBufferManagerDctnry(
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this, 8, fLog, column.compressionType);
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RETURN_ON_ERROR( mgr->setDbFile(curCol.dataFile.pFile, hwm, hdr) );
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}
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else
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{
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mgr = new ColumnBufferManager(
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this, column.width, fLog, column.compressionType);
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RETURN_ON_ERROR( mgr->setDbFile(curCol.dataFile.pFile, hwm, hdr) );
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}
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fColBufferMgr = mgr;
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IDBCompressInterface compressor;
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int abbrevFlag =
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( compressor.getBlockCount(hdr) ==
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uint64_t(INITIAL_EXTENT_ROWS_TO_DISK * column.width / BYTE_PER_BLOCK) );
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setFileSize( hwm, abbrevFlag );
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// See if dealing with abbreviated extent that will need expanding.
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// This only applies to the first extent of the first segment file.
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setAbbrevExtentCheck();
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// If we are dealing with initial extent, see if block skipping has
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// exceeded disk allocation, in which case we expand to a full extent.
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if (isAbbrevExtent())
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{
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unsigned int numBlksForFirstExtent =
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(INITIAL_EXTENT_ROWS_TO_DISK * column.width) / BYTE_PER_BLOCK;
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if ( ((oldHwm + 1) <= numBlksForFirstExtent) &&
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((hwm + 1 ) > numBlksForFirstExtent) )
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{
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RETURN_ON_ERROR( expandAbbrevExtent(false) );
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}
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}
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// Store the current allocated file size in availFileSize.
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// Keep in mind, these are raw uncompressed offsets.
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// NOTE: We don't call setFileOffset() to set the file position in the
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// column segment file at this point; we wait till we load the compressed
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// buffer later on in ColumnBufferCompressed::initToBeCompressedBuffer()
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long long byteOffset = (long long)hwm * (long long)BYTE_PER_BLOCK;
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fSizeWritten = byteOffset;
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fSizeWrittenStart = fSizeWritten;
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availFileSize = fileSize - fSizeWritten;
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if (fLog->isDebug( DEBUG_1 ))
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{
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std::ostringstream oss;
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oss << "Init raw data offsets in compressed column file OID-" <<
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curCol.dataFile.fid <<
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"; DBRoot-" << curCol.dataFile.fDbRoot <<
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"; part-" << curCol.dataFile.fPartition <<
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"; seg-" << curCol.dataFile.fSegment <<
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"; abbrev-" << abbrevFlag <<
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"; begByte-" << fSizeWritten <<
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"; endByte-" << fileSize <<
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"; freeBytes-" << availFileSize;
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fLog->logMsg( oss.str(), MSGLVL_INFO2 );
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}
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return NO_ERROR;
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}
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//------------------------------------------------------------------------------
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// Reinitializes ColBuf buffer, and resets
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// file offset data member attributes where new extent will start.
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//------------------------------------------------------------------------------
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int ColumnInfoCompressed::resetFileOffsetsNewExtent(const char* hdr)
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{
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setFileSize( curCol.dataFile.hwm, false );
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long long byteOffset = (long long)curCol.dataFile.hwm *
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(long long)BYTE_PER_BLOCK;
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fSizeWritten = byteOffset;
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fSizeWrittenStart = fSizeWritten;
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availFileSize = fileSize - fSizeWritten;
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// If we are adding an extent as part of preliminary block skipping, then
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// we won't have a ColumnBufferManager object yet, but that's okay, because
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// we are only adding the empty extent at this point.
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if (fColBufferMgr)
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{
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RETURN_ON_ERROR( fColBufferMgr->setDbFile(curCol.dataFile.pFile,
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curCol.dataFile.hwm, hdr) );
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// Reinitialize ColBuf for the next extent
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long long startFileOffset;
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RETURN_ON_ERROR( fColBufferMgr->resetToBeCompressedColBuf(
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startFileOffset ) );
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// Set the file offset to point to the chunk we are adding or updating
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RETURN_ON_ERROR( colOp->setFileOffset(curCol.dataFile.pFile,
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startFileOffset) );
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}
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return NO_ERROR;
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}
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//------------------------------------------------------------------------------
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// Save HWM chunk for compressed dictionary store files, so that the HWM chunk
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// can be restored by bulk rollback if an error should occur.
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//------------------------------------------------------------------------------
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// @bug 5572 - HDFS usage: add flag used to control *.tmp file usage
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int ColumnInfoCompressed::saveDctnryStoreHWMChunk(bool& needBackup)
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{
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#ifdef PROFILE
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Stats::startParseEvent(WE_STATS_COMPRESS_DCT_BACKUP_CHUNK);
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#endif
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needBackup = false;
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int rc = NO_ERROR;
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try
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{
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needBackup = fRBMetaWriter->backupDctnryHWMChunk(
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column.dctnry.dctnryOid,
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curCol.dataFile.fDbRoot,
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curCol.dataFile.fPartition,
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curCol.dataFile.fSegment );
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}
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catch (WeException& ex)
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{
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fLog->logMsg(ex.what(), ex.errorCode(), MSGLVL_ERROR);
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rc = ex.errorCode();
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}
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#ifdef PROFILE
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Stats::stopParseEvent(WE_STATS_COMPRESS_DCT_BACKUP_CHUNK);
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#endif
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return rc;
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}
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//------------------------------------------------------------------------------
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// Truncate specified dictionary store file for this column.
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// Only applies to compressed columns.
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//
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// This function may logically belong in a dictionary related class, but I did
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// not particularly want to put a bulk import specific function in Dctnry-
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// Compress1 (a wrapper class shared with DML/DDL) or Dctnry, so I put it here.
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// May change my mind later.
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//
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// dmc-Not the most efficient implementation. We are reopening
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// the file to perform the truncation, instead of truncating the file before
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// we close it. This is done because we need to first flush the compressed
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// chunks before we can determine the truncation file size. But the Chunk-
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// Manager flushChunks() function immediately closes the file and clears itself
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// after if flushes the data. So by the time we get back to the application
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// code it's too late to truncate the file. At some point, we could look at
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// adding or changing the ChunkManager API to support a flush w/o a close.
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// That would be more optimum than having to reopen the file for truncation.
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//------------------------------------------------------------------------------
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int ColumnInfoCompressed::truncateDctnryStore(
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OID dctnryOid, uint16_t root, uint32_t pNum, uint16_t sNum) const
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{
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int rc = NO_ERROR;
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// @bug5769 Don't initialize extents or truncate db files on HDFS
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if (idbdatafile::IDBPolicy::useHdfs())
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{
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std::ostringstream oss1;
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oss1 << "Finished writing dictionary file"
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": OID-" << dctnryOid <<
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"; DBRoot-" << root <<
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"; part-" << pNum <<
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"; seg-" << sNum;
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// Have to rework this logging if we want to keep it.
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// Filesize is not correct when adding data to an "existing" file,
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// since in the case of HDFS, we are writing to a *.cdf.tmp file.
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//char dctnryFileName[FILE_NAME_SIZE];
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//if (colOp->getFileName(dctnryOid,dctnryFileName,
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// root, pNum, sNum) == NO_ERROR)
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//{
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// off64_t dctnryFileSize = idbdatafile::IDBFileSystem::getFs(
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// IDBDataFile::HDFS).size(dctnryFileName);
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// if (dctnryFileSize != -1)
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// {
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// oss1 << "; size-" << dctnryFileSize;
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// }
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//}
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fLog->logMsg( oss1.str(), MSGLVL_INFO2 );
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}
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else
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{
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// See if the relevant dictionary store file can/should be truncated
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// (to the nearest extent)
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std::string segFile;
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IDBDataFile* dFile = fTruncateDctnryFileOp.openFile(dctnryOid,
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root, pNum, sNum, segFile);
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if (dFile == 0)
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{
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rc = ERR_FILE_OPEN;
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std::ostringstream oss;
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oss << "Error opening compressed dictionary store segment "
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"file for truncation" <<
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": OID-" << dctnryOid <<
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"; DbRoot-" << root <<
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"; partition-" << pNum <<
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"; segment-" << sNum;
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fLog->logMsg( oss.str(), rc, MSGLVL_ERROR );
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return rc;
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}
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char controlHdr[ IDBCompressInterface::HDR_BUF_LEN ];
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rc = fTruncateDctnryFileOp.readFile( dFile,
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(unsigned char*)controlHdr, IDBCompressInterface::HDR_BUF_LEN);
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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 reading compressed dictionary store control hdr "
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"for truncation" <<
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": OID-" << dctnryOid <<
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"; DbRoot-" << root <<
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"; partition-" << pNum <<
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"; segment-" << sNum <<
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"; " << ec.errorString(rc);
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fLog->logMsg( oss.str(), rc, MSGLVL_ERROR );
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fTruncateDctnryFileOp.closeFile( dFile );
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return rc;
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}
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IDBCompressInterface compressor;
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int rc1 = compressor.verifyHdr( controlHdr );
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if (rc1 != 0)
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{
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rc = ERR_COMP_VERIFY_HDRS;
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WErrorCodes ec;
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std::ostringstream oss;
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oss << "Error verifying compressed dictionary store ptr hdr "
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"for truncation" <<
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": OID-" << dctnryOid <<
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"; DbRoot-" << root <<
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"; partition-" << pNum <<
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"; segment-" << sNum <<
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"; (" << rc1 << ")";
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fLog->logMsg( oss.str(), rc, MSGLVL_ERROR );
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fTruncateDctnryFileOp.closeFile( dFile );
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return rc;
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}
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// No need to perform file truncation if the dictionary file just contains
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// a single abbreviated extent. Truncating up to the nearest extent would
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// actually grow the file (something we don't want to do), because we have
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// not yet reserved a full extent (on disk) for this dictionary store file.
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const int PSEUDO_COL_WIDTH = 8;
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uint64_t numBlocks = compressor.getBlockCount( controlHdr );
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if ( numBlocks == uint64_t
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(INITIAL_EXTENT_ROWS_TO_DISK * PSEUDO_COL_WIDTH / BYTE_PER_BLOCK) )
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{
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std::ostringstream oss1;
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oss1 << "Skip truncating abbreviated dictionary file"
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": OID-" << dctnryOid <<
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"; DBRoot-" << root <<
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"; part-" << pNum <<
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"; seg-" << sNum <<
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"; blocks-" << numBlocks;
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fLog->logMsg( oss1.str(), MSGLVL_INFO2 );
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fTruncateDctnryFileOp.closeFile( dFile );
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return NO_ERROR;
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}
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uint64_t hdrSize = compressor.getHdrSize(controlHdr);
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uint64_t ptrHdrSize = hdrSize - IDBCompressInterface::HDR_BUF_LEN;
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char* pointerHdr = new char[ptrHdrSize];
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rc = fTruncateDctnryFileOp.readFile(dFile,
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(unsigned char*)pointerHdr, ptrHdrSize);
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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 reading compressed dictionary store pointer hdr "
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"for truncation" <<
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": OID-" << dctnryOid <<
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"; DbRoot-" << root <<
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"; partition-" << pNum <<
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"; segment-" << sNum <<
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"; " << ec.errorString(rc);
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fLog->logMsg( oss.str(), rc, MSGLVL_ERROR );
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fTruncateDctnryFileOp.closeFile( dFile );
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return rc;
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}
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CompChunkPtrList chunkPtrs;
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rc1 = compressor.getPtrList( pointerHdr, ptrHdrSize, chunkPtrs );
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delete[] pointerHdr;
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if (rc1 != 0)
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{
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rc = ERR_COMP_PARSE_HDRS;
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WErrorCodes ec;
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std::ostringstream oss;
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oss << "Error parsing compressed dictionary store ptr hdr "
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"for truncation" <<
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": OID-" << dctnryOid <<
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"; DbRoot-" << root <<
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"; partition-" << pNum <<
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"; segment-" << sNum <<
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"; (" << rc1 << ")";
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fLog->logMsg( oss.str(), rc, MSGLVL_ERROR );
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fTruncateDctnryFileOp.closeFile( dFile );
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return rc;
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}
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// Truncate the relevant dictionary store file to the nearest extent
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if (chunkPtrs.size() > 0)
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{
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long long dataByteLength = chunkPtrs[chunkPtrs.size() - 1].first +
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chunkPtrs[chunkPtrs.size() - 1].second -
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hdrSize;
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long long extentBytes =
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fRowsPerExtent * PSEUDO_COL_WIDTH;
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long long rem = dataByteLength % extentBytes;
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if (rem > 0)
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{
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dataByteLength = dataByteLength - rem + extentBytes;
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}
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long long truncateFileSize = dataByteLength + hdrSize;
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std::ostringstream oss1;
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oss1 << "Truncating dictionary file"
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": OID-" << dctnryOid <<
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"; DBRoot-" << root <<
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"; part-" << pNum <<
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"; seg-" << sNum <<
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"; size-" << truncateFileSize;
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fLog->logMsg( oss1.str(), MSGLVL_INFO2 );
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if (truncateFileSize > 0)
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rc = fTruncateDctnryFileOp.truncateFile(dFile, truncateFileSize);
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else
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rc = ERR_COMP_TRUNCATE_ZERO;//@bug3913-Catch truncate to 0 bytes
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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 compressed dictionary store file"
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": OID-" << dctnryOid <<
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"; DbRoot-" << root <<
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"; partition-" << pNum <<
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"; segment-" << sNum <<
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"; " << ec.errorString(rc);
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fLog->logMsg( oss.str(), rc, MSGLVL_ERROR );
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fTruncateDctnryFileOp.closeFile( dFile );
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return rc;
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}
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}
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fTruncateDctnryFileOp.closeFile( dFile );
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}
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return NO_ERROR;
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}
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//------------------------------------------------------------------------------
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// Fill out existing partial extent to extent boundary, so that we can resume
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// inserting rows on an extent boundary basis. This use case should only take
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// place when a DBRoot with a partial extent has been moved from one PM to
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// another.
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//------------------------------------------------------------------------------
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int ColumnInfoCompressed::extendColumnOldExtent(
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uint16_t dbRootNext,
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uint32_t partitionNext,
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uint16_t segmentNext,
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HWM hwmNextIn )
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{
|
||
const unsigned int BLKS_PER_EXTENT =
|
||
(fRowsPerExtent * column.width) / BYTE_PER_BLOCK;
|
||
|
||
// Round up HWM to the end of the current extent
|
||
unsigned int nBlks = hwmNextIn + 1;
|
||
unsigned int nRem = nBlks % BLKS_PER_EXTENT;
|
||
HWM hwmNext = 0;
|
||
|
||
if (nRem > 0)
|
||
hwmNext = nBlks - nRem + BLKS_PER_EXTENT - 1;
|
||
else
|
||
hwmNext = nBlks - 1;
|
||
|
||
std::ostringstream oss;
|
||
oss << "Padding compressed partial extent to extent boundary in OID-" <<
|
||
curCol.dataFile.fid <<
|
||
"; DBRoot-" << dbRootNext <<
|
||
"; part-" << partitionNext <<
|
||
"; seg-" << segmentNext <<
|
||
"; hwm-" << hwmNext;
|
||
fLog->logMsg( oss.str(), MSGLVL_INFO2 );
|
||
|
||
curCol.dataFile.pFile = 0;
|
||
curCol.dataFile.fDbRoot = dbRootNext;
|
||
curCol.dataFile.fPartition = partitionNext;
|
||
curCol.dataFile.fSegment = segmentNext;
|
||
curCol.dataFile.hwm = hwmNext;
|
||
curCol.dataFile.fSegFileName.clear();
|
||
|
||
std::string segFileName;
|
||
std::string errTask;
|
||
int rc = colOp->fillCompColumnExtentEmptyChunks(
|
||
curCol.dataFile.fid,
|
||
curCol.colWidth,
|
||
column.emptyVal,
|
||
curCol.dataFile.fDbRoot,
|
||
curCol.dataFile.fPartition,
|
||
curCol.dataFile.fSegment,
|
||
curCol.dataFile.hwm,
|
||
segFileName,
|
||
errTask);
|
||
|
||
if (rc != NO_ERROR)
|
||
{
|
||
WErrorCodes ec;
|
||
std::ostringstream oss;
|
||
oss << "extendColumnOldExtent: error padding extent (" <<
|
||
errTask << "); " <<
|
||
"column OID-" << curCol.dataFile.fid <<
|
||
"; DBRoot-" << curCol.dataFile.fDbRoot <<
|
||
"; part-" << curCol.dataFile.fPartition <<
|
||
"; seg-" << curCol.dataFile.fSegment <<
|
||
"; newHwm-" << curCol.dataFile.hwm <<
|
||
"; " << ec.errorString(rc);
|
||
fLog->logMsg( oss.str(), rc, MSGLVL_CRITICAL );
|
||
fpTableInfo->fBRMReporter.addToErrMsgEntry(oss.str());
|
||
return rc;
|
||
}
|
||
|
||
addToSegFileList( curCol.dataFile, hwmNext );
|
||
|
||
return NO_ERROR;
|
||
}
|
||
|
||
}
|