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From "Aaron Fabbri (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13876) S3Guard: better support for multi-bucket access
Date Sat, 04 Feb 2017 01:27:51 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Aaron Fabbri updated HADOOP-13876:
    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

> S3Guard: better support for multi-bucket access
> -----------------------------------------------
>                 Key: HADOOP-13876
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13876
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: HADOOP-13345
>            Reporter: Aaron Fabbri
>            Assignee: Aaron Fabbri
>         Attachments: HADOOP-13876-HADOOP-13345.000.patch, HADOOP-13876-HADOOP-13345.001.patch,
HADOOP-13876-HADOOP-13345.002.patch, HADOOP-13876-HADOOP-13345.003.patch, HADOOP-13876-HADOOP-13345.004.patch,
> HADOOP-13449 adds support for DynamoDBMetadataStore.
> The code currently supports two options for choosing DynamoDB table names:
> 1. Use name of each s3 bucket and auto-create a DynamoDB table for each.
> 2. Configure a table name in the {{fs.s3a.s3guard.ddb.table}} parameter.
> However, if a user sets {{fs.s3a.s3guard.ddb.table}} and accesses multiple buckets, DynamoDBMetadataStore
does not properly differentiate between paths belonging to different buckets.  For example,
it would treat s3a://bucket-a/path1 as the same as s3a://bucket-b/path1.
> Goals for this JIRA:
> - Allow for a "one DynamoDB table per cluster" configuration.  If a user accesess multiple
buckets with that single table, it should work correctly.  
> - Explain which credentials are used for DynamoDB.  Currently each S3AFileSystem has
its own DynamoDBMetadataStore, which uses the credentials from the S3A fs.   We at least need
to document this behavior.
> - Document any other limitations etc. in the s3guard.md site doc.

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