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ORC-1525: Fix bad read in RleDecoderV2::readByte - #1645
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This PR aims to fixapache#1640 by resetting `BooleanRleEncoderImpl::current` and `BooleanRleEncoderImpl::bitsRemained` when suppress As apache#1640 suppress no null present stream leaves dirty data of BooleanRleEncoderImpl::current and BooleanRleEncoderImpl::bitsRemained, which will be flush to next stripe's present stream if it has some null values. I hava add a test testSuppressPresentStreamInPreStripe, which will construct a orc file with two stripe, the first stripe has no null value and seconds stripe has some null values. The constructed orc file writer have some dirty data in BooleanRleEncoderImpl for present stream. In the test I have add check for read ok and read result is same as write. Closesapache#1640 . Closesapache#1641 from hoffermei/present_supress_bugfix. Lead-authored-by: hoffermei <meihaifeng.hust@gmail.com> Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>
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+1, LGTM. Thank you so much!
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### What changes were proposed in this pull request? This PR aims to fix#1640 by resetting `BooleanRleEncoderImpl::current` and `BooleanRleEncoderImpl::bitsRemained` when suppress ### Why are the changes needed? As #1640 suppress no null present stream leaves dirty data of BooleanRleEncoderImpl::current and BooleanRleEncoderImpl::bitsRemained, which will be flush to next stripe's present stream if it has some null values. ### How was this patch tested? I hava add a test testSuppressPresentStreamInPreStripe, which will construct a orc file with two stripe, the first stripe has no null value and seconds stripe has some null values. The constructed orc file writer have some dirty data in BooleanRleEncoderImpl for present stream. In the test I have add check for read ok and read result is same as write. Closes#1640 . Closes#1645 from wgtmac/branch-1.8. Authored-by: hoffermei <meihaifeng.hust@gmail.com> Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>
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Merged to branch-1.8. |
morningman pushed a commit
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Jun 18, 2025
… Decompress zlib by libdeflate. (#51775) ### What problem does this PR solve? Problem Summary: ### Release note 1. Cherry-pick ORC-1525 to fix bad read in RleDecoderV2::readByte. - third-party PR: apache/doris-thirdparty#322 - orc issue: https://issues.apache.org/jira/browse/ORC-1525 - orc PR: apache/orc#1645 2. Decompress zlib by libdeflate.
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What changes were proposed in this pull request?
This PR aims to fix#1640 by resetting
BooleanRleEncoderImpl::currentandBooleanRleEncoderImpl::bitsRemainedwhen suppressWhy are the changes needed?
As #1640 suppress no null present stream leaves dirty data of BooleanRleEncoderImpl::current and BooleanRleEncoderImpl::bitsRemained, which will be flush to next stripe's present stream if it has some null values.
How was this patch tested?
I hava add a test testSuppressPresentStreamInPreStripe, which will construct a orc file with two stripe, the first stripe has no null value and seconds stripe has some null values. The constructed orc file writer have some dirty data in BooleanRleEncoderImpl for present stream. In the test I have add check for read ok and read result is same as write.
Closes#1640 .