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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-7319) Coarse-grained dynamic configuration changes
Date Sun, 22 May 2011 20:50:47 GMT
Coarse-grained dynamic configuration changes
--------------------------------------------

                 Key: HADOOP-7319
                 URL: https://issues.apache.org/jira/browse/HADOOP-7319
             Project: Hadoop Common
          Issue Type: Improvement
          Components: conf
            Reporter: Ted Yu


HADOOP-7001 introduced mechanism for performing dynamic configuration changes where reconfigureProperty()/reconfigurePropertyImpl()
only notifies single property change.

Normally, components which use ReconfigurableBase would involve several related properties
whose update should be done atomically.

This JIRA provides coarse-grained dynamic configuration changes with the following benefits:
1. consistency updating related properties dynamically
2. reduction of lock contention when multiple properties are changed in proximity

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