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From "Mingliang Liu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-13449) S3Guard: Implement DynamoDBMetadataStore.
Date Tue, 08 Nov 2016 02:52:59 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-13449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mingliang Liu updated HADOOP-13449:
-----------------------------------
    Attachment: HADOOP-13449-HADOOP-13345.002.patch

Thanks all for the insightful comments! I changed the patch accordingly, with some comments
to address in the next patch (I'm actively working on v3 patch now):

# We assume the client/callers have pre-create all the parents of the path. This is different
from in-memory local store. Put itself will not check this and will not fail. As we should
fail if the parent directories are missing, we fail later (e.g. in S3A#close).
# Sorry the "isAuthorative" is not stored yet. I'm confused when to set/get the value. Is
this purely controlled by the client?
# Bumping the AWS SDK version is a prerequisite. This patch bumps for test purpose.
# Will make the "DDBMetadataStore" 1:1 mapping with the table. So {{createTable}}, {{deleteTable}}
and {{provisionTable}} will all take no table names.
# Will add more logic to guard the {{isEmpty}} field.

> 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,
HADOOP-13449-HADOOP-13345.002.patch
>
>
> Provide an implementation of the metadata store backed by DynamoDB.



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