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skip reading unused columns in stripes #132

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richox opened this issue Oct 23, 2024 · 0 comments · Fixed by #133
Closed

skip reading unused columns in stripes #132

richox opened this issue Oct 23, 2024 · 0 comments · Fixed by #133

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@richox
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richox commented Oct 23, 2024

as described in kwai/blaze#630, orc-rust reads all columns from stripes regardless the given projection, which leads to unused IO and slows down execution.
we should filter out columns that are required in projected result and only read these columns.
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@richox