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Leonid Fedorov
@ -16,8 +16,8 @@
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MA 02110-1301, USA. */
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/*
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* $Id: we_bulkrollbackfilecompressed.h 4726 2013-08-07 03:38:36Z bwilkinson $
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*/
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* $Id: we_bulkrollbackfilecompressed.h 4726 2013-08-07 03:38:36Z bwilkinson $
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*/
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/** @file
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* Contains class to restore compressed db files on behalf of BulkRollBackMgr.
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@ -45,111 +45,82 @@ class BulkRollbackMgr;
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//------------------------------------------------------------------------------
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class BulkRollbackFileCompressed : public BulkRollbackFile
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{
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public:
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public:
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/** @brief BulkRollbackFile constructor
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* @param mgr The controlling BulkRollbackMgr object.
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*/
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BulkRollbackFileCompressed(BulkRollbackMgr* mgr);
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/** @brief BulkRollbackFile constructor
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* @param mgr The controlling BulkRollbackMgr object.
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*/
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BulkRollbackFileCompressed(BulkRollbackMgr* mgr);
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/** @brief BulkRollbackFile destructor
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*/
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virtual ~BulkRollbackFileCompressed();
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/** @brief BulkRollbackFile destructor
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*/
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virtual ~BulkRollbackFileCompressed();
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/** @brief Do we reinit trailing blocks in the HWM extent for the specified
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* segment file
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*
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* @param columnOID OID of the segment file in question
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* @param dbRoot DBRoot for the segment file in question
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* @param partNum Partition number for the segment file in question
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* @param segNum Segment number for the segment file in question
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*/
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virtual bool doWeReInitExtent(OID columnOID, uint32_t dbRoot, uint32_t partNum, uint32_t segNum) const;
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/** @brief Do we reinit trailing blocks in the HWM extent for the specified
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* segment file
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*
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* @param columnOID OID of the segment file in question
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* @param dbRoot DBRoot for the segment file in question
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* @param partNum Partition number for the segment file in question
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* @param segNum Segment number for the segment file in question
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*/
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virtual bool doWeReInitExtent( OID columnOID,
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uint32_t dbRoot,
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uint32_t partNum,
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uint32_t segNum) const;
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/** @brief Reinitialize the specified column segment file starting at
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* startOffsetBlk, and truncate trailing extents.
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* @param columnOID OID of the relevant segment file
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* @param dbRoot DBRoot of the relevant segment file
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* @param partNum Partition number of the relevant segment file
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* @param segNum Segment number of the relevant segment file
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* @param startOffsetBlk Starting block offset where file is to be
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* reinitialized
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* @param nBlocks Number of blocks to be reinitialized
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* @param colType Column type of the relevant segment file
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* @param colWidth Width in bytes of column.
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* @param restoreHwmChk Restore HWM chunk
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*/
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virtual void reInitTruncColumnExtent(OID columnOID, uint32_t dbRoot, uint32_t partNum, uint32_t segNum,
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long long startOffsetBlk, int nBlocks,
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execplan::CalpontSystemCatalog::ColDataType colType, uint32_t colWidth,
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bool restoreHwmChk);
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/** @brief Reinitialize the specified column segment file starting at
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* startOffsetBlk, and truncate trailing extents.
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* @param columnOID OID of the relevant segment file
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* @param dbRoot DBRoot of the relevant segment file
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* @param partNum Partition number of the relevant segment file
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* @param segNum Segment number of the relevant segment file
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* @param startOffsetBlk Starting block offset where file is to be
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* reinitialized
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* @param nBlocks Number of blocks to be reinitialized
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* @param colType Column type of the relevant segment file
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* @param colWidth Width in bytes of column.
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* @param restoreHwmChk Restore HWM chunk
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*/
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virtual void reInitTruncColumnExtent(OID columnOID,
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uint32_t dbRoot,
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uint32_t partNum,
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uint32_t segNum,
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long long startOffsetBlk,
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int nBlocks,
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execplan::CalpontSystemCatalog::ColDataType colType,
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uint32_t colWidth,
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bool restoreHwmChk );
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/** @brief Reinitialize the specified dictionary store segment file starting
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* at startOffsetBlk, and truncate trailing extents.
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* @param columnOID OID of the relevant segment file
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* @param dbRoot DBRoot of the relevant segment file
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* @param partNum Partition number of the relevant segment file
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* @param segNum Segment number of the relevant segment file
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* @param startOffsetBlk Starting block offset where file is to be
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* reinitialized
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* @param nBlocks Number of blocks to be reinitialized
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*/
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virtual void reInitTruncDctnryExtent(OID columnOID, uint32_t dbRoot, uint32_t partNum, uint32_t segNum,
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long long startOffsetBlk, int nBlocks);
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/** @brief Reinitialize the specified dictionary store segment file starting
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* at startOffsetBlk, and truncate trailing extents.
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* @param columnOID OID of the relevant segment file
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* @param dbRoot DBRoot of the relevant segment file
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* @param partNum Partition number of the relevant segment file
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* @param segNum Segment number of the relevant segment file
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* @param startOffsetBlk Starting block offset where file is to be
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* reinitialized
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* @param nBlocks Number of blocks to be reinitialized
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*/
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virtual void reInitTruncDctnryExtent(OID columnOID,
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uint32_t dbRoot,
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uint32_t partNum,
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uint32_t segNum,
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long long startOffsetBlk,
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int nBlocks );
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/** @brief Truncate the specified segment file to a specified num of bytes
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* @param columnOID OID of the relevant segment file
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* @param dbRoot DBRoot of the relevant segment file
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* @param partNum Partition number of the relevant segment file
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* @param segNum Segment number of the relevant segment file
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* @param fileSizeBlocks Number of blocks to retain in the file
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*/
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virtual void truncateSegmentFile(OID columnOID, uint32_t dbRoot, uint32_t partNum, uint32_t segNum,
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long long filesSizeBlocks);
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/** @brief Truncate the specified segment file to a specified num of bytes
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* @param columnOID OID of the relevant segment file
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* @param dbRoot DBRoot of the relevant segment file
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* @param partNum Partition number of the relevant segment file
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* @param segNum Segment number of the relevant segment file
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* @param fileSizeBlocks Number of blocks to retain in the file
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*/
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virtual void truncateSegmentFile( OID columnOID,
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uint32_t dbRoot,
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uint32_t partNum,
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uint32_t segNum,
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long long filesSizeBlocks );
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private:
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// Disable unnecessary copy constructor and assignment operator
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BulkRollbackFileCompressed(const BulkRollbackFileCompressed& rhs);
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BulkRollbackFileCompressed& operator=(const BulkRollbackFileCompressed& rhs);
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private:
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// Disable unnecessary copy constructor and assignment operator
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BulkRollbackFileCompressed(const BulkRollbackFileCompressed& rhs);
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BulkRollbackFileCompressed& operator=(const BulkRollbackFileCompressed& rhs);
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size_t readFillBuffer(IDBDataFile* pFile, char* buffer, size_t bytesReq) const;
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int restoreHWMChunk(IDBDataFile* pFile, OID columnOID, uint32_t partNum, uint32_t segNum,
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uint64_t fileOffsetByteForRestoredChunk, uint64_t& restoredChunkLen,
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uint64_t& restoredFileSize, std::string& errMsg);
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int loadColumnHdrPtrs(IDBDataFile* pFile, char* hdrs, compress::CompChunkPtrList& chunkPtrs,
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std::string& errMsg) const;
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int loadDctnryHdrPtrs(IDBDataFile* pFile, char* controlHdr, compress::CompChunkPtrList& chunkPtrs,
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uint64_t& ptrHdrSize, std::string& errMsg) const;
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size_t readFillBuffer ( IDBDataFile* pFile,
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char* buffer,
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size_t bytesReq) const;
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int restoreHWMChunk ( IDBDataFile* pFile,
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OID columnOID,
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uint32_t partNum,
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uint32_t segNum,
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uint64_t fileOffsetByteForRestoredChunk,
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uint64_t& restoredChunkLen,
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uint64_t& restoredFileSize,
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std::string& errMsg );
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int loadColumnHdrPtrs ( IDBDataFile* pFile,
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char* hdrs,
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compress::CompChunkPtrList& chunkPtrs,
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std::string& errMsg) const;
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int loadDctnryHdrPtrs ( IDBDataFile* pFile,
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char* controlHdr,
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compress::CompChunkPtrList& chunkPtrs,
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uint64_t& ptrHdrSize,
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std::string& errMsg ) const;
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compress::CompressorPool fCompressorPool;
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compress::CompressorPool fCompressorPool;
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};
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} //end of namespace
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} // namespace WriteEngine
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