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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7549) Use JDK ServiceLoader mechanism to find FileSystem implementations
Date Thu, 01 Sep 2011 17:12:10 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13095434#comment-13095434

Alejandro Abdelnur commented on HADOOP-7549:

@Owen, are you suggesting we should de-overlap schema names? If so, agreed. 

Some how related, it was mentioned before, the patch allows you to override via configuration
settings an impl defined as service. This will allow people to use alternate impls for a FS
schema easily.

> 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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