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https://issues.apache.org/jira/browse/HADOOP-19033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17806097#comment-17806097
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ASF GitHub Bot commented on HADOOP-19033:
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steveloughran commented on PR #6441:
URL: https://github.com/apache/hadoop/pull/6441#issuecomment-1889514535
rebase problems; will submit fix. latest test runs works except for
[HADOOP-19037](https://issues.apache.org/jira/browse/HADOOP-19037)
_S3A: S3A: ITestS3AConfiguration failing with region problems_ .. not this
code; me changing my .aws/config defaults
> 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
>
> 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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