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From "Aaron Fabbri (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14130) Simplify DynamoDBClientFactory for creating Amazon DynamoDB clients
Date Tue, 28 Feb 2017 17:42:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15888532#comment-15888532
] 

Aaron Fabbri commented on HADOOP-14130:
---------------------------------------

We discussed this in HADOOP-14090.  We were going to add Region and use that, but you can
see on the discussion there we decided not to.  We now depend on endpoint instead.  So I agree
with Sean: -1 removing endpoint.

> Simplify DynamoDBClientFactory for creating Amazon DynamoDB clients
> -------------------------------------------------------------------
>
>                 Key: HADOOP-14130
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14130
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Mingliang Liu
>            Assignee: Mingliang Liu
>         Attachments: HADOOP-14130-HADOOP-13345.000.patch, HADOOP-14130-HADOOP-13345.001.patch
>
>
> So, we are using deprecated {{AmazonDynamoDBClient}} class to create a DynamoDB client
instead of the recommended builder. We had discussion in [HADOOP-13345] for preferring region
to endpoints for user to specify the DynamoDB region (if associated S3 region is unknown or
different). We have reported inconsistent behavior if endpoint and S3 region are different
in [HADOOP-14027]. We also noticed that {{DynamoDBMetadataStore}} may sometimes logs nonsense
region. And in [HADOOP-13252], we also have feelings that file system URI is not needed to
create a {{AWSCredentialProvider}}. Resultantly we don't need to pass down file system URI
for creating a DynamoDB client.
> So this JIRA is to change this, best effort.



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