hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Chris Li (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-10811) Allow classes to be reloaded at runtime
Date Thu, 10 Jul 2014 03:30:05 GMT
Chris Li created HADOOP-10811:

             Summary: Allow classes to be reloaded at runtime
                 Key: HADOOP-10811
                 URL: https://issues.apache.org/jira/browse/HADOOP-10811
             Project: Hadoop Common
          Issue Type: New Feature
          Components: conf
    Affects Versions: 3.0.0
            Reporter: Chris Li
            Assignee: Chris Li
            Priority: Minor

Currently hadoop loads its classes and caches them in the Configuration class. Even if the
user swaps a class's jar at runtime, hadoop will continue to use the cached classes when using
reflection to instantiate objects. This limits the usefulness of things like HADOOP-10285,
because the admin would need to restart each time they wanted to change their queue class.

This patch is to add a way to refresh the class cache, by creating a new refresh handler to
do so (using HADOOP-10376)

This message was sent by Atlassian JIRA

View raw message