[ACCUMULO-4458] lock contention around configuration settings impacts tablet server performance

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.7.1, 1.8.0
• Fix Version/s: 1.7.3, 1.8.1, 2.0.0
• Component/s: tserver
• Assignee: Sean Busbey
• Reporter: Sean Busbey
• Created: 14/Sep/16 23:35
• Updated: 15/Sep/16 20:57
• Resolved: 15/Sep/16 20:48

Description

While investigating a pretty severe performance regression comparing YCSB against 1.6 and 1.7, I found a fair bit of lock contention around getting configuration values. This was improved by ACCUMULO-4388, but various threads eventually all started contending on the configuration values expected from the site xml files.

Issue Links

• is related to: ACCUMULO-4460 Remove backing Hadoop Configuration object from SiteConfiguration