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Hassan Sajjad commented on POOL-151: ------------------------------------ Generic Object Pool/Eviction params {noformat} <property name="maxActive" value="100" /> <property name="maxIdle" value="100" /> <property name="exhaustedAction" value="2" /> <!-- GROW --> <property name="timeBetweenEvictionRunsMillis" value="10000" /> <!-- 10 sec for testing / reproducing the issue --> <property name="minEvictableIdleTimeMillis" value="10000" /> <property name="numTestsPerEvictionRun" value="-1" /> {noformat} > Eviction thread is able to remove (destroy) in-flight (borrowed) objects > ------------------------------------------------------------------------ > > Key: POOL-151 > URL: https://issues.apache.org/jira/browse/POOL-151 > Project: Commons Pool > Issue Type: Bug > Affects Versions: 1.5.3 > Reporter: Hassan Sajjad > Priority: Blocker > > Under high concurrent use, the eviction thread can temper with an in-use > object from the pool, potentially causing catastrophic results, as illustrate > in the below log from our use. Note the object - in our case JMSSession is > closed in-flight (after message send but before commit), causing the commit > to fail with {{javax.jms.IllegalStateException: MQJMS1024: session closed}} > error. > {noformat} > 2009-10-12 15:08:40,254 DEBUG [asyncDelivery59] Borrowed session > com.ibm.mq.jms.mqqueuesess...@40bc88 for jms connector > 2009-10-12 15:08:40,341 DEBUG [Timer-0] Physically closing > com.ibm.mq.jms.mqqueuesess...@40bc88 for connector > 2009-10-12 15:08:40,669 DEBUG [asyncDelivery59] Returning session > com.ibm.mq.jms.mqqueuesess...@40bc88 for jms conn > ector > 2009-10-12 15:08:40,433 ERROR [asyncDelivery59] Exception caught while > committing transaction [com.ibm.mq.jms.mqqueuesess...@40bc88] > {noformat} -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.