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https://issues.apache.org/jira/browse/HADOOP-13449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15620639#comment-15620639
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Chris Nauroth commented on HADOOP-13449:
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bq. Also: that dynamo DB dependency MUST be at {{<provided>}} scope. We don't
want to force it on people.
[[email protected]], the DynamoDB client adds no transitive dependencies that
hadoop-aws is not already picking up through the AWS SDK. Here we can see the
only dependencies are on aws-java-sdk-s3 and aws-java-sdk-core:
https://github.com/aws/aws-sdk-java/blob/1.10.6/aws-java-sdk-dynamodb/pom.xml#L19-L45
Everything else is a test-only dependency.
In this case, I wonder if the right trade-off is for us to allow the
dependency, so that downstream projects can pick up S3Guard functionality
without needing to add the aws-java-sdk-dynamodb dependency explicitly. Those
projects would likely need to keep synchronized with whatever AWS SDK version
number we're using in Hadoop, so as to avoid internal version conflicts around
things like aws-java-sdk-core.
> S3Guard: Implement DynamoDBMetadataStore.
> -----------------------------------------
>
> Key: HADOOP-13449
> URL: https://issues.apache.org/jira/browse/HADOOP-13449
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Chris Nauroth
> Assignee: Mingliang Liu
> Attachments: HADOOP-13449-HADOOP-13345.000.patch,
> HADOOP-13449-HADOOP-13345.001.patch
>
>
> Provide an implementation of the metadata store backed by DynamoDB.
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