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Posted to common-issues@hadoop.apache.org by "Anu Engineer (JIRA)" <ji...@apache.org> on 2015/01/30 21:20:34 UTC

[jira] [Assigned] (HADOOP-11527) Support ServiceLoader mechanism for finding subclasses of AbstractFileSystem.

     [ https://issues.apache.org/jira/browse/HADOOP-11527?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Anu Engineer reassigned HADOOP-11527:
-------------------------------------

    Assignee: Anu Engineer

> Support ServiceLoader mechanism for finding subclasses of AbstractFileSystem.
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-11527
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11527
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>            Reporter: Chris Nauroth
>            Assignee: Anu Engineer
>
> Currently, Hadoop code can discover custom implementations of {{FileSystem}} via either configuration mapping the scheme to the class name or the Java {{ServiceLoader}} mechanism.  However, for implementations of {{AbstractFileSystem}}, only configuration is supported and not the {{ServiceLoader}} mechanism.  Because of this, we must either specify the classes in core-default.xml (which is somewhat unusual because the class is likely to be in a hadoop-tools module instead of hadoop-common) or ask users to set it in core-site.xml at deployment time.  This issue proposes to implement the {{ServiceLoader}} mechanism for {{AbstractFileSystem}}.



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