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From "Mingliang Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13345) S3Guard: Improved Consistency for S3A
Date Tue, 14 Mar 2017 21:57:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15925108#comment-15925108
] 

Mingliang Liu commented on HADOOP-13345:
----------------------------------------

Easy and useful change. According to:

{quote}
DDB - TableName
The name of the table to create.

Type: String

Length Constraints: Minimum length of 3. Maximum length of 255.

Pattern: {noformat}[a-zA-Z0-9_.-]+{noformat}

Required: Yes
{quote}
And
{quote}
S3: Rules for Bucket Naming:
Bucket names must be at least 3 and no more than 63 characters long.
Bucket names must be a series of one or more labels. Adjacent labels are separated by a single
period (.). Bucket names can contain lowercase letters, numbers, and hyphens. Each label must
start and end with a lowercase letter or a number.
Bucket names must not be formatted as an IP address (e.g., 192.168.5.4).
When using virtual hosted–style buckets with SSL, the SSL wildcard certificate only matches
buckets that do not contain periods. To work around this, use HTTP or write your own certificate
verification logic. We recommend that you do not use periods (".") in bucket names.
{quote}

S3Guard_ or S3Guard- works good as a prefix.

Alternatively, we can add tags for DDB tables. See http://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_TagResource.html

> S3Guard: Improved Consistency for S3A
> -------------------------------------
>
>                 Key: HADOOP-13345
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13345
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs/s3
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>         Attachments: HADOOP-13345.prototype1.patch, s3c.001.patch, S3C-ConsistentListingonS3-Design.pdf,
S3GuardImprovedConsistencyforS3A.pdf, S3GuardImprovedConsistencyforS3AV2.pdf
>
>
> This issue proposes S3Guard, a new feature of S3A, to provide an option for a stronger
consistency model than what is currently offered.  The solution coordinates with a strongly
consistent external store to resolve inconsistencies caused by the S3 eventual consistency
model.



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