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Posted to common-issues@hadoop.apache.org by "Aaron Fabbri (JIRA)" <ji...@apache.org> on 2017/02/17 01:10:42 UTC
[jira] [Commented] (HADOOP-14090) Allow users to specify region for
DynamoDB table instead of endpoint
[ 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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