[PR] feat: Migrate SST block infrastructure and file reader/writer [paimon-cpp]

["lxy-9602 (via GitHub)" <gi...@apache.org>]

lxy-9602 opened a new pull request, #44:
URL: https://github.com/apache/paimon-cpp/pull/44

   <!-- Please specify the module before the PR name: feat: ... or fix: ... -->
   
   ### Purpose
   
   <!-- Linking this pull request to the issue -->
   No Linked issue.
   
   Migrate SST (Sorted String Table) block-level I/O infrastructure:
   
   **Block primitives (`src/paimon/common/sst/`):**
   - `BlockEntry` — key-value entry within a data block (`block_entry.h`)
   - `BlockHandle` — offset/size pointer to a block within an SST file (`block_handle.h/cpp`)
   - `BlockTrailer` — block checksum and compression type footer (`block_trailer.h/cpp`)
   - `BlockAlignedType` — alignment strategy enum for block I/O (`block_aligned_type.h`)
   - `BloomFilterHandle` — handle pointing to the bloom filter block (`bloom_filter_handle.h`)
   
   **Block read/write (`src/paimon/common/sst/`):**
   - `BlockWriter` — appends entries and builds a serialized block (`block_writer.h/cpp`)
   - `BlockReader` — reads and parses a serialized block (`block_reader.h/cpp`)
   - `BlockIterator` — iterates over entries in a parsed block (`block_iterator.h/cpp`)
   - `BlockCache` — LRU cache wrapper for parsed blocks (`block_cache.h`)
   
   **SST file I/O (`src/paimon/common/sst/`):**
   - `SstFileUtils` — shared constants and utility functions (`sst_file_utils.h`)
   - `SstFileWriter` — writes blocks, index, bloom filter, and footer into an SST file (`sst_file_writer.h/cpp`)
   - `SstFileReader` — opens and reads blocks from an SST file (`sst_file_reader.h/cpp`)
   
   
   <!-- What is the purpose of the change -->
   
   ### Tests
   - `block_cache_test.cpp` — LRU eviction, capacity limits, concurrent access
   - `sst_file_io_test.cpp` — end-to-end SST write/read round-trip, block iteration
   <!-- List UT and IT cases to verify this change -->
   
   ### API and Format
   
   <!-- Does this change affect API in include dir or storage format or protocol -->
   
   ### Documentation
   
   <!-- Does this change introduce a new feature -->
   
   ### Generative AI tooling
   Migrate-by: Aone Copilot (Claude)
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   If generative AI tooling has been used in the process of authoring this patch, please include the
   phrase: 'Generated-by: ' followed by the name of the tool and its version.
   If no, write 'No'.
   Please refer to the [ASF Generative Tooling Guidance](https://www.apache.org/legal/generative-tooling.html) for details.
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Re: [PR] feat: Migrate SST block infrastructure and file reader/writer [paimon-cpp]

["lxy-9602 (via GitHub)" <gi...@apache.org>]

lxy-9602 commented on PR #44:
URL: https://github.com/apache/paimon-cpp/pull/44#issuecomment-4618048267

   Thank you @ChaomingZhangCN for the contributions to the SST block infrastructure — including block primitives, block read/write, and SST file I/O — migrated as part of this batch. 🎉


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Re: [PR] feat: Migrate SST block infrastructure and file reader/writer [paimon-cpp]

["leaves12138 (via GitHub)" <gi...@apache.org>]

leaves12138 merged PR #44:
URL: https://github.com/apache/paimon-cpp/pull/44


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