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https://issues.apache.org/jira/browse/ARROW-11696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dominik Moritz updated ARROW-11696:
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Description:
I have the IPC format of Arrow record batches in memory (e.g. as {{&[u8]}}) and
would like to create a vector of batches while avoiding as many memory copies
as possible. It would be great if there was a way to create the vector without
having to go through the file abstraction.
I might be misunderstanding the way the file reader works and maybe it does not
incur memory copies. I think it does, though, since creating arrow record
batches from a larger arrow buffer takes much longer.
was:
I have the IPC format of Arrow record batches in memory (e.g. as `&[u8]`) and
would like to create a vector of batches while avoiding as many memory copies
as possible. It would be great if there was a way to create the vector without
having to go through the file abstraction.
I might be misunderstanding the way the file reader works and maybe it does not
incur memory copies. I think it does, though, since creating arrow record
batches from a larger arrow buffer takes much longer.
> [Rust] Create record batches from in memory IPC without memory copies
> ---------------------------------------------------------------------
>
> Key: ARROW-11696
> URL: https://issues.apache.org/jira/browse/ARROW-11696
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Rust
> Reporter: Dominik Moritz
> Priority: Major
>
> I have the IPC format of Arrow record batches in memory (e.g. as {{&[u8]}})
> and would like to create a vector of batches while avoiding as many memory
> copies as possible. It would be great if there was a way to create the vector
> without having to go through the file abstraction.
> I might be misunderstanding the way the file reader works and maybe it does
> not incur memory copies. I think it does, though, since creating arrow record
> batches from a larger arrow buffer takes much longer.
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