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https://issues.apache.org/jira/browse/HADOOP-13449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15603229#comment-15603229
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Mingliang Liu edited comment on HADOOP-13449 at 10/24/16 9:14 PM:
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{quote}
I feel that we should have a consistent contract for all the stores.
{quote}
Yes we should fix this.

{quote}
Regarding isEmptyDirectory. should we store it in dynamodb as well?
{quote}
I plan to store this in the v1 patch. We can optimize this in the future if too 
many requests to DynamoDB.

{quote}
DynamoDBMetadataStore should have a getTableName() or getTable().
{quote}
That makes perfect sense as well. Perhaps a {{Table}} is better so that we can 
(will we?) operate it directly (query/scan etc) in the CLI tool?

{quote}
For authoritative(), do you think storing it as a flag in the DynamoDB is a 
good idea?
{quote}
That's a good suggestion. I can try this.


was (Author: liuml07):
{quote}
I feel that we should have a consistent contract for all the stores.
{quote}
Yes we should fix this.

{quote}
Regarding isEmptyDirectory. should we store it in dynamodb as well?
{quote}
I plan to store this in the v1 patch. We can optimize this in the future if too 
many requests to DynamoDB.

{quote}
DynamoDBMetadataStore should have a getTableName() or getTable().
{quote}
That makes perfect sense as well.

{quote}
For authoritative(), do you think storing it as a flag in the DynamoDB is a 
good idea?
{quote}
That's a good suggestion. I can try this.

> 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
>
>
> Provide an implementation of the metadata store backed by DynamoDB.



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