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[fix](parquet) parquet reader confuses logical/physical/slot id of columns #23198

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merged 1 commit into from
Aug 22, 2023
Merged

[fix](parquet) parquet reader confuses logical/physical/slot id of columns #23198

merged 1 commit into from
Aug 22, 2023

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AshinGau
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@AshinGau AshinGau commented Aug 18, 2023 •
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Proposed changes

ParquetReader confuses logical/physical/slot id of columns. If only reading the scalar types, there's nothing wrong, but when reading complex types, RowGroup and PageIndex will get wrong statistics. Therefore, if the query contains complex types and pushed-down predicates, the probability of the result set is incorrect.

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If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...

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clang-tidy review says "All clean, LGTM! 👍"

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run buildall

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clang-tidy review says "All clean, LGTM! 👍"

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(From new machine)TeamCity pipeline, clickbench performance test result:
the sum of best hot time: 45.54 seconds
stream load tsv: 542 seconds loaded 74807831229 Bytes, about 131 MB/s
stream load json: 21 seconds loaded 2358488459 Bytes, about 107 MB/s
stream load orc: 66 seconds loaded 1101869774 Bytes, about 15 MB/s
stream load parquet: 31 seconds loaded 861443392 Bytes, about 26 MB/s
insert into select: 29.7 seconds inserted 10000000 Rows, about 336K ops/s
storage size: 17162345150 Bytes

morningman
morningman reviewed Aug 20, 2023
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BE ut failed

be/src/vec/exec/format/parquet/vparquet_reader.cpp Show resolved Hide resolved
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run buildall

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clang-tidy review says "All clean, LGTM! 👍"

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(From new machine)TeamCity pipeline, clickbench performance test result:
the sum of best hot time: 46.06 seconds
stream load tsv: 557 seconds loaded 74807831229 Bytes, about 128 MB/s
stream load json: 20 seconds loaded 2358488459 Bytes, about 112 MB/s
stream load orc: 65 seconds loaded 1101869774 Bytes, about 16 MB/s
stream load parquet: 31 seconds loaded 861443392 Bytes, about 26 MB/s
insert into select: 29.1 seconds inserted 10000000 Rows, about 343K ops/s
storage size: 17162183572 Bytes

kaka11chen
kaka11chen approved these changes Aug 21, 2023
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LGTM

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PR approved by anyone and no changes requested.

morningman
morningman approved these changes Aug 21, 2023
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LGTM

@github-actions github-actions bot added the approved Indicates a PR has been approved by one committer. label Aug 21, 2023
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PR approved by at least one committer and no changes requested.

@morningman morningman merged commit 5ff7b57 into apache:master Aug 22, 2023
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xiaokang pushed a commit that referenced this pull request Aug 22, 2023
@AshinGau @xiaokang
[fix](parquet) parquet reader confuses logical/physical/slot id of co…
4733597 
…lumns (#23198)

`ParquetReader` confuses logical/physical/slot id of columns. If only reading the scalar types, there's nothing wrong, but when reading complex types, `RowGroup` and `PageIndex` will get wrong statistics. Therefore, if the query contains complex types and pushed-down predicates, the probability of the result set is incorrect.
@xiaokang xiaokang mentioned this pull request Aug 30, 2023
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@morningman morningman morningman approved these changes

@kaka11chen kaka11chen kaka11chen approved these changes

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@AshinGau @hello-stephen @kaka11chen @morningman @xiaokang