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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