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https://issues.apache.org/jira/browse/HADOOP-19317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17901000#comment-17901000
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ASF GitHub Bot commented on HADOOP-19317:
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steveloughran merged PR #7178:
URL: https://github.com/apache/hadoop/pull/7178
> S3A: fs.s3a.connection.expect.continue controls 100 CONTINUE behavior
> ---------------------------------------------------------------------
>
> Key: HADOOP-19317
> URL: https://issues.apache.org/jira/browse/HADOOP-19317
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.4.1
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.5.0, 3.4.2
>
>
> New option
> {code}
> fs.s3a.connection.expect.continue
> {code}
> This controls whether or not an PUT request to the S3 store
> sets the "Expect: 100-continue" header and awaits a 100 CONTINUE
> response before uploading any data.
> This allows for throttling and other problems to be detected fast.
> The default is "true" -the header is sent.
> It seems like either the AWS SDK or http client libraries underneath don't
> recognise a dead HTTPS connection when using this.
> Leaving as enabled as it can cope with heavy load better (clients can get a
> 503 and know to back off before uploading any data.
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