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Posted to common-issues@hadoop.apache.org by "Justin Uang (JIRA)" <ji...@apache.org> on 2019/01/17 20:19:00 UTC

[jira] [Created] (HADOOP-16050) Support setting cipher suites for s3a file system

Justin Uang created HADOOP-16050:
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             Summary: Support setting cipher suites for s3a file system
                 Key: HADOOP-16050
                 URL: https://issues.apache.org/jira/browse/HADOOP-16050
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 2.9.1
            Reporter: Justin Uang
         Attachments: Screen Shot 2019-01-17 at 2.57.06 PM.png

We have found that when running the S3AFileSystem, it picks GCM as the ssl cipher suite. Unfortunately this is well known to be slow on java 8: [https://stackoverflow.com/questions/25992131/slow-aes-gcm-encryption-and-decryption-with-java-8u20.]

 

In practice we have seen that it can take well over 50% of our CPU time in spark workflows. We should add an option to set the list of cipher suites we would like to use. !Screen Shot 2019-01-17 at 2.57.06 PM.png!



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