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https://issues.apache.org/jira/browse/POOL-153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12790851#action_12790851
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Gary Gregory commented on POOL-153:
-----------------------------------
Can you test with the latest 1.5.x release?
> Deadlock at GenericObjectPool.addObjectToPool and AbandonedTrace.addTrace
> -------------------------------------------------------------------------
>
> Key: POOL-153
> URL: https://issues.apache.org/jira/browse/POOL-153
> Project: Commons Pool
> Issue Type: Bug
> Affects Versions: 1.4
> Environment: 2009-12-14 13:42:42
> Full thread dump OpenJDK Client VM (1.6.0_0-b12 mixed mode):
> Reporter: Stephen Evanchik
>
> Deadlock observed after 72 hours of continuous use. I'm not sure if this is a
> DBCP or pool bug. Please feel free to reroute me accordingly.
> commons-pool is used via commons-dbcp. DBCP Configuration is as follows:
> initialSize=5
> maxActive=75
> maxIdle=15
> minIdle=5
> maxWait=20000
> minEvictableIdleTimeMillis=15
> poolPreparedStatements=false
> maxOpenPreparedStatements=0
> numTestsPerEvictionRun=15
> testOnBorrow=false
> testOnReturn=false
> testWhileIdle=true
> timeBetweenEvictionRunsMillis=30000
> validationQuery=SELECT 1 FROM DUAL
> Excerpt from a jstack dump:
> "Timer-7":
> at
> org.apache.commons.dbcp.AbandonedTrace.addTrace(AbandonedTrace.java:175)
> - waiting to lock <0x70ca1880> (a
> org.apache.commons.dbcp.PoolableConnection)
> at org.apache.commons.dbcp.AbandonedTrace.init(AbandonedTrace.java:92)
> at org.apache.commons.dbcp.AbandonedTrace.<init>(AbandonedTrace.java:82)
> at
> org.apache.commons.dbcp.DelegatingStatement.<init>(DelegatingStatement.java:61)
> at
> org.apache.commons.dbcp.DelegatingConnection.createStatement(DelegatingConnection.java:224)
> at
> org.apache.commons.dbcp.PoolableConnectionFactory.validateConnection(PoolableConnectionFactory.java:331)
> at
> org.apache.commons.dbcp.PoolableConnectionFactory.validateObject(PoolableConnectionFactory.java:312)
> at
> org.apache.commons.pool.impl.GenericObjectPool.evict(GenericObjectPool.java:1217)
> - locked <0x6e5ee6b0> (a org.apache.commons.pool.impl.GenericObjectPool)
> at
> org.apache.commons.pool.impl.GenericObjectPool$Evictor.run(GenericObjectPool.java:1341)
> at java.util.TimerThread.mainLoop(Timer.java:534)
> at java.util.TimerThread.run(Timer.java:484)
> "Timer-12":
> at
> org.apache.commons.pool.impl.GenericObjectPool.addObjectToPool(GenericObjectPool.java:1136)
> - waiting to lock <0x6e5ee6b0> (a
> org.apache.commons.pool.impl.GenericObjectPool)
> at
> org.apache.commons.pool.impl.GenericObjectPool.returnObject(GenericObjectPool.java:1076)
> at
> org.apache.commons.dbcp.PoolableConnection.close(PoolableConnection.java:87)
> - locked <0x70ca1880> (a org.apache.commons.dbcp.PoolableConnection)
> at
> org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.close(PoolingDataSource.java:181)
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