[TRB-100] Pool Exhaustion in Fulcrum Parse + Commons Pool2, DBCP2

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Fulcrum
• Assignee: Unassigned
• Reporter: Georg Kallidis
• Created: 19/Jun/19 09:19
• Updated: 19/Jun/19 09:19

Description

Web app does not respond due to pool exhaustion

Test scenarios (JMeter):

• tomcat 8.5, 6 threads, each with about 150 POST + 150 GET requests (POST requests might exhaust Parameter parser pool),in sum 1200 requests
• shared dependency commons-pool2-2.6.0

pool exhaustion:

positive

commons-dbcp2-2.5.0
fulcrum-parser-2.0.0 = commons.pool2 defaults

stops after about request 1000 consistently

negative

commons-dbcp2-2.6.1-SNAPSHOT
fulcrum-parser-2.0.0 = commons.pool2 defaults

commons-dbcp2-2.5.0
fulcrum-parser-2.0.1-SNAPSHOT

 

• Upgrade to either commons-dbcp2 2.6.1 or fulcrum-parser 2.0.1 seem to solve this problem, but both are currently unreleased!
• Due to this (fixed) [bug |https://github.com/apache/commons-dbcp/pull/31/commits](Torque needs this), dbcp 2.6.0 could not be used.