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MCOL-5021 For the DELETE operation, empty magic values are only

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written to database files for AUX column. Perform read-only operation
for other columns in the table to update the Casual Partitioning information.
This commit is contained in:
Gagan Goel
2022-04-20 13:42:53 -04:00
parent 86df9a972c
commit 35a3a93964
10 changed files with 128 additions and 84 deletions
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7
writeengine/shared/we_chunkmanager.h
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@ -146,7 +146,6 @@ class CompFileData
, fColWidth(colWidth)
, fDctnryCol(false)
, fFilePtr(NULL)
, fIoBSize(0)
, fCompressionType(1)
{
}
@ -163,8 +162,6 @@ class CompFileData
std::string fFileName;
CompFileHeader fFileHeader;
std::list<ChunkData*> fChunkList;
boost::scoped_array<char> fIoBuffer;
size_t fIoBSize;
uint32_t fCompressionType;
friend class ChunkManager;
@ -203,7 +200,7 @@ class ChunkManager
// @brief Read a block from pFile at offset fbo.
// The data may copied from memory if the chunk it belongs to is already available.
int readBlock(IDBDataFile* pFile, unsigned char* readBuf, uint64_t fbo);
int readBlock(IDBDataFile* pFile, unsigned char* readBuf, uint64_t fbo, bool isReadOnly = false);
// @brief Save a block to a chunk in pFile.
// The block is not written to disk immediately, will be delayed until flush.
@ -290,7 +287,7 @@ class ChunkManager
bool useTmpSuffix, bool dctnry) const;
// @brief Retrieve a chunk of pFile from disk.
int fetchChunkFromFile(IDBDataFile* pFile, int64_t id, ChunkData*& chunkData);
int fetchChunkFromFile(IDBDataFile* pFile, int64_t id, ChunkData*& chunkData, bool isReadOnly = false);
// @brief Compress a chunk and write it to file.
int writeChunkToFile(CompFileData* fileData, int64_t id);