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https://issues.apache.org/jira/browse/HADOOP-12162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16203282#comment-16203282
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Steve Loughran commented on HADOOP-12162:
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We;ve been discussing using the StreamCapabilities.hasCapabilities() API to
filesystems so they can declare their semantics
[S3A|https://github.com/steveloughran/hadoop/blob/s3guard/HADOOP-13786-committer/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AFileSystem.java#L3133]
To do this broadly
* we need to finish up the output stream work (HADOOP-14872 , HADOOP-13327)
* we need to add the interface to FileSystem and FileContext, with the base
implementation returning true/false for the default behaviours of the FS
* And for every FS the ASF ships, override/extend that with their differences
* Then give the other filesystem connector suppliers (redhat, mapr, cassandra,
...) some warning of the change
In the meantime, yes, please, get started with the spec of ACLs.
> Add ACL APIs to the FileSystem specification
>
>
> Key: HADOOP-12162
> URL: https://issues.apache.org/jira/browse/HADOOP-12162
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: documentation
>Reporter: Arpit Agarwal
> Labels: newbie
>
> The following ACL APIs should be added to the [FileSystem
> specification|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/filesystem/filesystem.html]
> # modifyAclEntries
> # removeAclEntries
> # removeDefaultAcl
> # removeAcl
> # setAcl
> # getAclStatus
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