[enhance](parquet) Support BYTE_STREAM_SPLIT encoding for parquet reader #41683
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Thank you for your contribution to Apache Doris. Since 2024-03-18, the Document has been moved to doris-website. |
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clang-tidy review says "All clean, LGTM! 👍" |
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clang-tidy review says "All clean, LGTM! 👍" |
morningman
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Oct 11, 2024
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run buildall |
TPC-H: Total hot run time: 40659 ms |
TPC-DS: Total hot run time: 191612 ms |
ClickBench: Total hot run time: 32.87 s |
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TeamCity be ut coverage result: |
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run buildall |
TPC-H: Total hot run time: 40984 ms |
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TeamCity be ut coverage result: |
TPC-DS: Total hot run time: 191651 ms |
ClickBench: Total hot run time: 32.18 s |
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run buildall |
TPC-H: Total hot run time: 40815 ms |
TPC-DS: Total hot run time: 191118 ms |
ClickBench: Total hot run time: 32.81 s |
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TeamCity be ut coverage result: |
CalvinKirs
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Oct 14, 2024
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PR approved by at least one committer and no changes requested. |
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PR approved by anyone and no changes requested. |
morningman
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Oct 14, 2024
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…der (apache#41683) ## Proposed changes Impl ByteStreamSplitDecoder to decode BYTE_STREAM_SPLIT encoding parquet. relate pr: apache/arrow#42372 > Apache Parquet does not have any encodings suitable for FP data and the available text compressors (zstd, gzip, etc) do not handle FP data very well. It is possible to apply a simple data transformation named "stream splitting". Such could be "byte stream splitting" which creates K streams of length N where K is the number of bytes in the data type (4 for floats, 8 for doubles) and N is the number of elements in the sequence. --------- Co-authored-by: morningman <morningman@163.com>
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…der (apache#41683) ## Proposed changes Impl ByteStreamSplitDecoder to decode BYTE_STREAM_SPLIT encoding parquet. relate pr: apache/arrow#42372 > Apache Parquet does not have any encodings suitable for FP data and the available text compressors (zstd, gzip, etc) do not handle FP data very well. It is possible to apply a simple data transformation named "stream splitting". Such could be "byte stream splitting" which creates K streams of length N where K is the number of bytes in the data type (4 for floats, 8 for doubles) and N is the number of elements in the sequence. --------- Co-authored-by: morningman <morningman@163.com>
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…der (apache#41683) ## Proposed changes Impl ByteStreamSplitDecoder to decode BYTE_STREAM_SPLIT encoding parquet. relate pr: apache/arrow#42372 > Apache Parquet does not have any encodings suitable for FP data and the available text compressors (zstd, gzip, etc) do not handle FP data very well. It is possible to apply a simple data transformation named "stream splitting". Such could be "byte stream splitting" which creates K streams of length N where K is the number of bytes in the data type (4 for floats, 8 for doubles) and N is the number of elements in the sequence. --------- Co-authored-by: morningman <morningman@163.com>
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Proposed changes
Impl ByteStreamSplitDecoder to decode BYTE_STREAM_SPLIT encoding parquet.
relate pr: apache/arrow#42372