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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2017/12/20 19:21:00 UTC
[jira] [Commented] (HADOOP-15135) S3a to support get/set
permissions through S3 object tags
[ https://issues.apache.org/jira/browse/HADOOP-15135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16298954#comment-16298954 ]
Steve Loughran commented on HADOOP-15135:
-----------------------------------------
[Aws object tags|http://docs.aws.amazon.com/AmazonS3/latest/dev/object-tagging.html]
Arguments for:
* distcp likes it, makes write-then-recover possible
* lossless
Arguments against:
* without directory entries, you can't preserve directory permissions
* could set up unrealistic expectations about security permissions actually working
* although you can get back PUT-time headers on a HEAD request, you have to issue another HTTP request to get tags
* would need a lazy on-demand permissions populator for FileStatus, as local FS does, except it now the cost could actually have a network round trip and a failure: very expensive.
> S3a to support get/set permissions through S3 object tags
> ---------------------------------------------------------
>
> Key: HADOOP-15135
> URL: https://issues.apache.org/jira/browse/HADOOP-15135
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Steve Loughran
>
> Azure wasb supports get/set permissions (for persistence only) to help round trip distcp operations.
> Could aws tags be used similarly?
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