[SPARK-47113][CORE] Revert S3A endpoint fixup logic of SPARK-35878 #45193
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Revert [SPARK-35878][CORE] Add fs.s3a.endpoint if unset and fs.s3a.endpoint.region is null Removing the region/endpoint patching code of SPARK-35878 avoids authentication problems with versions of the S3A connector built with AWS v2 SDK -as is the case in Hadoop 3.4.0. That is: if fs.s3a.endpoint is unset it will stay unset. The v2 SDK does its binding to AWS Services differently, in what can be described as "region first" binding. Spark setting the endpoint blocks S3 Express support and is incompatible with HADOOP-18975 S3A: Add option fs.s3a.endpoint.fips to use AWS FIPS endpoints - apache/hadoop#6277 The change is compatible with all releases of the s3a connector other than hadoop 3.3.1 binaries deployed outside EC2 and without the endpoint explicitly set. AWS v2 SDK has a different/complex binding mechanism; it doesn't need the endpoint to be set if the region (fs.s3a.region) value is set. This means the spark code to fix an endpoint is not only un-needed, it causes problems when trying to use specific storage options (S3 Express) or security options (FIPS) Only visible on hadoop 3.3.1 s3a connector when deployed outside of EC2 -the situation the original patch was added to work around. All other 3.3.x releases are good. Removed some obsolete tests. Relying on github and jenkins to do the testing so marking this PR as WiP until they are happy. No Closes apache#44834 from steveloughran/SPARK-46793-revert-region-fixup-SPARK-35878. Authored-by: Steve Loughran <[email protected]> Signed-off-by: Dongjoon Hyun <[email protected]>
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This is a clone of the following with a correct new JIRA ID and the original authorship. #44834 was merged and reverted due to the wrong JIRA ID. |
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cc @steveloughran and @shameersss1 |
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Could you review this PR, @HyukjinKwon ? Actually, I merged and reverted this code (at #44834) because of the wrong JIRA ID. 
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HyukjinKwon
approved these changes
Feb 21, 2024
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Thank you! |
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Merged to master for Apache Spark 4.0.0. |
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sorry, I'd just used the original as it was a revert |
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No problem. It was my mistake because I mistakenly merged it even when I knew it. |
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What changes were proposed in this pull request?
Revert [SPARK-35878][CORE] Add fs.s3a.endpoint if unset and fs.s3a.endpoint.region is null
Removing the region/endpoint patching code of SPARK-35878 avoids authentication problems with versions of the S3A connector built with AWS v2 SDK -as is the case in Hadoop 3.4.0.
That is: if fs.s3a.endpoint is unset it will stay unset.
The v2 SDK does its binding to AWS Services differently, in what can be described as "region first" binding. Spark setting the endpoint blocks S3 Express support and is incompatible with HADOOP-18975 S3A: Add option fs.s3a.endpoint.fips to use AWS FIPS endpoints
The change is compatible with all releases of the s3a connector other than hadoop 3.3.1 binaries deployed outside EC2 and without the endpoint explicitly set.
Why are the changes needed?
AWS v2 SDK has a different/complex binding mechanism; it doesn't need the endpoint to
be set if the region (fs.s3a.region) value is set. This means the spark code to
fix an endpoint is not only un-needed, it causes problems when trying to use specific
storage options (S3 Express) or security options (FIPS)
Does this PR introduce any user-facing change?
Only visible on hadoop 3.3.1 s3a connector when deployed outside of EC2 -the situation the original patch was added to work around. All other 3.3.x releases are good.
How was this patch tested?
Removed some obsolete tests. Relying on github and jenkins to do the testing so marking this PR as WiP until they are happy.
Was this patch authored or co-authored using generative AI tooling?
No