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Posted to common-issues@hadoop.apache.org by "Steve Loughran (Jira)" <ji...@apache.org> on 2024/01/19 14:10:00 UTC

[jira] [Resolved] (HADOOP-19033) S3A: disable checksum validation

     [ https://issues.apache.org/jira/browse/HADOOP-19033?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran resolved HADOOP-19033.
-------------------------------------
    Fix Version/s: 3.5.0
       Resolution: Fixed

> S3A: disable checksum validation
> --------------------------------
>
>                 Key: HADOOP-19033
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19033
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.4.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.5.0
>
>
> AWS v2 sdk turns on client-side checksum validation; this kills performance
> Given we are using TLS to download from AWS s3, there's implicit channel checksumming going on on, that's along with the IPv4 TCP checksumming.
> We don't need it, all it does is slow us down.
> proposed: disable in DefaultS3ClientFactory
> I don't want to add an option to enable it as it only complicates life (yet another config option), but I am open to persuasion



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