[HADOOP-7319] Coarse-grained dynamic configuration changes

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: conf
• Assignee: Unassigned
• Reporter: Ted Yu
• Created: 22/May/11 20:49
• Updated: 22/May/11 20:49

Description

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