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lightning: a way to estimate parquet file size (#46984) #48908
lightning: a way to estimate parquet file size (#46984) #48908
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Signed-off-by: zeminzhou <zhouzemin@pingcap.com>
Co-authored-by: D3Hunter <jujj603@gmail.com>
Co-authored-by: D3Hunter <jujj603@gmail.com>
Signed-off-by: zeminzhou <zhouzemin@pingcap.com>
Signed-off-by: zeminzhou <zhouzemin@pingcap.com>
Signed-off-by: zeminzhou <zhouzemin@pingcap.com>
Signed-off-by: zeminzhou <zhouzemin@pingcap.com>
Signed-off-by: zeminzhou <zhouzemin@pingcap.com>
/retest |
Codecov Report
Additional details and impacted files@@ Coverage Diff @@
## release-7.1 #48908 +/- ##
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Coverage ? 73.4271%
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Files ? 1206
Lines ? 377732
Branches ? 0
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Hits ? 277358
Misses ? 82676
Partials ? 17698 |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: lance6716, okJiang, zeminzhou The full list of commands accepted by this bot can be found here. The pull request process is described here
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/retest |
This is an automated cherry-pick of #46984
What problem does this PR solve?
Issue Number: close #46980
Problem Summary:
What is changed and how it works?
Estimated by sampling:
row data size/sampled row data size =~ row count/sampled row count
.Manual testing:
data size after conversion to row
: using lightning converts the entire parquet format file to row format.estimated data size
: estimated data size byrow data size/sampled row data size =~ row count/sampled row count
.Check List
Tests
Side effects
Documentation
Release note
Please refer to Release Notes Language Style Guide to write a quality release note.