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https://issues.apache.org/jira/browse/HDFS-7391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14208188#comment-14208188
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Dave Thompson commented on HDFS-7391:
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Looking at the patch, config change appears benign....
> Renable SSLv2Hello in HttpFS
> ----------------------------
>
> Key: HDFS-7391
> URL: https://issues.apache.org/jira/browse/HDFS-7391
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 2.6.0, 2.5.2
> Reporter: Robert Kanter
> Assignee: Robert Kanter
> Priority: Blocker
> Attachments: HDFS-7391-branch-2.5.patch, HDFS-7391.patch
>
>
> We should re-enable "SSLv2Hello", which is required for older clients (e.g.
> Java 6 with openssl 0.9.8x) so they can't connect without it. Just to be
> clear, it does not mean SSLv2, which is insecure.
> I couldn't simply do an addendum patch on HDFS-7274 because it's already been
> closed.
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