[jira] [Commented] (HDFS-6375) Listing extended attributes with the search permission

[Andrew Wang (JIRA)]

    [ 
https://issues.apache.org/jira/browse/HDFS-6375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14013094#comment-14013094
 ] 

Andrew Wang commented on HDFS-6375:
-----------------------------------

I took a hack at fixing the java warning, I think this works:

{code}
    List<String> names = Lists.newArrayListWithCapacity(json.keySet().size());
    for (Object o: json.keySet()) {
      names.add((String)o);
    }
    return names;
{code}

Also, why are we using a map still with {{JsonUtil#toJsonMap(List<Xattr>)}}? 
Shouldn't we be doing {{toJsonArray}}?

> Listing extended attributes with the search permission
> ------------------------------------------------------
>
>                 Key: HDFS-6375
>                 URL: https://issues.apache.org/jira/browse/HDFS-6375
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 3.0.0
>            Reporter: Andrew Wang
>            Assignee: Charles Lamb
>         Attachments: HDFS-6375.1.patch, HDFS-6375.10.patch, 
> HDFS-6375.2.patch, HDFS-6375.3.patch, HDFS-6375.4.patch, HDFS-6375.5.patch, 
> HDFS-6375.6.patch, HDFS-6375.7.patch, HDFS-6375.8.patch, HDFS-6375.9.patch
>
>
> From the attr(5) manpage:
> {noformat}
>        Users with search access to a file or directory may retrieve a list  of
>        attribute names defined for that file or directory.
> {noformat}
> This is like doing {{getfattr}} without the {{-d}} flag, which we currently 
> don't support.



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