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https://issues.apache.org/jira/browse/HADOOP-16371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17224661#comment-17224661
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Steve Loughran commented on HADOOP-16371:
-----------------------------------------
HADOOP-17337 surfaced -implies there's not enough reflection in NetworlBinding
class. and we can't downgrade to the unshaded AWS SDK
> Option to disable GCM for SSL connections when running on Java 8
> ----------------------------------------------------------------
>
> Key: HADOOP-16371
> URL: https://issues.apache.org/jira/browse/HADOOP-16371
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Sahil Takiar
> Assignee: Sahil Takiar
> Priority: Major
> Fix For: 3.3.0
>
>
> This was the original objective of HADOOP-16050. HADOOP-16050 was changed to
> mimic HADOOP-15669 and added (or attempted to add) support for
> Wildfly-OpenSSL in S3A.
> Due to the number of issues have seen with S3A + WildFly OpenSSL (see
> HADOOP-16346), HADOOP-16050 was reverted.
> As shown in the description of HADOOP-16050, and the analysis done in
> HADOOP-15669, GCM has major performance issues when running on Java 8.
> Removing it from the list of available ciphers can drastically improve
> performance, perhaps not as much as using OpenSSL, but still a considerable
> amount.
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