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Is it more efficient to read a single column of a structure or multiple columns in Apache Arrow?

asked 2022-01-10 11:00:00 +0000

djk gravatar image

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answered 2022-10-17 06:00:00 +0000

pufferfish gravatar image

It is generally more efficient to read multiple columns of a structure in Apache Arrow because the data is stored in a columnar format, which allows for better memory utilization and cache efficiency. Reading a single column requires reading the entire column, including any unused memory, leading to increased data transfer and processing time. However, if the application only needs to access a single column, it may be more efficient to read that column alone. The optimal approach depends on the specific use case and data access patterns.

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Asked: 2022-01-10 11:00:00 +0000

Seen: 1 times

Last updated: Oct 17 '22