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From "Aaron Fabbri (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14090) Allow users to specify region for DynamoDB table instead of endpoint
Date Fri, 17 Feb 2017 01:10:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15870984#comment-15870984

Aaron Fabbri commented on HADOOP-14090:

Some quick comments before doing a more in-depth review:

- Now is good time to clean up CLI arguments, since compatibility will be a concern post-merge.
 I'm fine with some of that landing in this patch.
- Region and endpoint are mutually exclusive from everything I've read (e.g. [dev guide|http://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/java-dg-region-selection.html]).
 Region is short-hand for endpoint. We should specify behavior if both are specified:  Log
an error and ignore region (use endpoint) if both configuration parameters are set.
- We should also streamline the init and config code so these things are set up in one place
(e.g. the region lookup you mention).

> Allow users to specify region for DynamoDB table instead of endpoint
> --------------------------------------------------------------------
>                 Key: HADOOP-14090
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14090
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Sean Mackrory
>         Attachments: HADOOP-14090-HADOOP-13345.001.patch
> Assuming the AWS SDK allows this, I think this would be a better way to configure it
for any usage on AWS itself (with endpoint still being an option for AWS-compatible non-AWS
use cases). Unless users actually care about a specific endpoint, this is easier. Perhaps
less important, HADOOP-14023 shows that inferring the region from the endpoint (which granted,
isn't that necessary) doesn't work very well at all.

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