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Posted to jira@arrow.apache.org by "Rok Mihevc (Jira)" <ji...@apache.org> on 2023/01/11 07:14:03 UTC

[jira] [Commented] (ARROW-1224) [Format] Clarify language around buffer padding and alignment in IPC

    [ https://issues.apache.org/jira/browse/ARROW-1224?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17658256#comment-17658256 ] 

Rok Mihevc commented on ARROW-1224:
-----------------------------------

This issue has been migrated to [issue #17045|https://github.com/apache/arrow/issues/17045] on GitHub. Please see the [migration documentation|https://github.com/apache/arrow/issues/14542] for further details.

> [Format] Clarify language around buffer padding and alignment in IPC
> --------------------------------------------------------------------
>
>                 Key: ARROW-1224
>                 URL: https://issues.apache.org/jira/browse/ARROW-1224
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Format
>            Reporter: Wes McKinney
>            Assignee: Siddharth Teotia
>            Priority: Major
>             Fix For: 0.6.0
>
>
> We recommend 64-byte padding in memory allocations, but in practice some systems may emit buffers that are only 8-byte aligned. We should take a look through the format documents and perhaps indicate that 64-byte padding is the _preferred_ padding but that 8-byte padding is the _required_ padding. 
> In particular, it should be clear that each buffer in an IPC payload must start on an aligned 8-byte offset, but it does not necessarily need to be 64-byte aligned. 



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