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https://issues.apache.org/jira/browse/HADOOP-15813?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16773582#comment-16773582
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Wei-Chiu Chuang commented on HADOOP-15813:
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KMS decrypt_eek throughput
!KMS throughput.png!
> Enable more reliable SSL connection reuse
> -----------------------------------------
>
> Key: HADOOP-15813
> URL: https://issues.apache.org/jira/browse/HADOOP-15813
> Project: Hadoop Common
> Issue Type: Bug
> Components: common
> Affects Versions: 2.6.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Major
> Attachments: HADOOP-15813.patch, HADOOP-15813.patch, KMS
> throughput.png, profiler after HADOOP-15813.png, profiler prior to
> HADOOP-15813.png
>
>
> The java keep-alive cache relies on instance equivalence of the SSL socket
> factory. In many java versions, SSLContext#getSocketFactory always returns a
> new instance which completely breaks the cache. Clients flooding a service
> with lingering per-request connections that can lead to port exhaustion. The
> hadoop SSLFactory should cache the socket factory associated with the context.
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