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https://issues.apache.org/jira/browse/HADOOP-7549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087854#comment-13087854
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Suresh Srinivas commented on HADOOP-7549:
-----------------------------------------

My main concern is - multiple implementations could be using the same scheme 
names (example RawLocalFileSystem, LocalFileSystem etc). I am not sure which 
one wins in that case. Also some one adding a jar to the path, with say an 
experimental file system (say HDFS) could override the DistributedFileSystem 
and not even know about it.

We should consider adding HOOP to the config file.

> Use JDK ServiceLoader mechanism to find FileSystem implementations
> ------------------------------------------------------------------
>
>                 Key: HADOOP-7549
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7549
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 0.23.0
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>             Fix For: 0.23.0
>
>         Attachments: HADOOP-7549v1.patch
>
>
> Currently configuring FileSystem implementations must be done by declaring 
> the FileSystem class in the Hadoop configuration files (core-default.xml, 
> ...).
> Using JDK ServiceLoader mechanism this configuration step can be avoided. 
> Adding the JAR file with the additional FileSystem implementation would 
> suffice. 
> This is similar to what is being proposed for compression codecs 
> (HADOOP-7350).

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