Ahmar Suhail created HADOOP-18579:
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Summary: Warn when no region is configured
Key: HADOOP-18579
URL: https://issues.apache.org/jira/browse/HADOOP-18579
Project: Hadoop Common
Issue Type: Sub-task
Reporter: Ahmar Suhail
The AWS Java SDK V1 allows for cross region access. This means that even if you
have instantiate the S3 client with US_EAST_1 (or any region different to your
actual bucket's region), the SDK will figure out the region.
With the upgrade to SDK V2, this is no longer supported and the region should
be set explicitly. To prepare for this change, S3A should warn when a region is
not set via fs.s3a.endpoint.region.
We should warn even if fs.s3a.endpoint is set and region can be parsed from
this. This is because it is recommended to let the SDK V2 figure out the
endpoint to use from the region, and so S3A should discourage from setting the
endpoint unless absolutely required (eg for third party stores).
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