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lightning: a way to estimate parquet file size #46980

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zeminzhou opened this issue Sep 14, 2023 · 0 comments · Fixed by #46984
Closed

lightning: a way to estimate parquet file size #46980

zeminzhou opened this issue Sep 14, 2023 · 0 comments · Fixed by #46984
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affects-7.1 This bug affects the 7.1.x(LTS) versions. type/enhancement The issue or PR belongs to an enhancement.

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@zeminzhou
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zeminzhou commented Sep 14, 2023 •
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Enhancement

Since parquet format files are in column storage format, they have a larger compression ratio. Lightning currently uses the data size of the parquet source file size directly, and there is no way to estimate the data size of the parquet data format file after it is converted to row data.
@zeminzhou zeminzhou added the type/enhancement The issue or PR belongs to an enhancement. label Sep 14, 2023
@zeminzhou zeminzhou mentioned this issue Sep 14, 2023
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ti-chi-bot bot pushed a commit that referenced this issue Sep 22, 2023
@zeminzhou
lightning: a way to estimate parquet file size (#46984)
398de79 
close #46980
@okJiang okJiang added the affects-7.1 This bug affects the 7.1.x(LTS) versions. label Nov 27, 2023
@ti-chi-bot ti-chi-bot mentioned this issue Nov 27, 2023
Merged
12 tasks
ti-chi-bot bot pushed a commit that referenced this issue Nov 28, 2023
@ti-chi-bot
lightning: a way to estimate parquet file size (#46984) (#48908)
72e5323 
close #46980
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affects-7.1 This bug affects the 7.1.x(LTS) versions. type/enhancement The issue or PR belongs to an enhancement.
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lightning: a way to estimate parquet file size zeminzhou/tidb
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