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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 type/enhancement

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@zeminzhou
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zeminzhou commented Sep 14, 2023 •
edited

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 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
yibin87 pushed a commit to yibin87/tidb that referenced this issue Oct 31, 2023
@zeminzhou @yibin87
lightning: a way to estimate parquet file size (pingcap#46984)
f913a83 
close pingcap#46980
@ti-chi-bot ti-chi-bot mentioned this issue Nov 27, 2023
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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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lightning: a way to estimate parquet file size zeminzhou/tidb
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@okJiang @zeminzhou