[ https://issues.apache.org/jira/browse/DBCP-260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Phil Steitz updated DBCP-260: ----------------------------- Fix Version/s: 1.4 This should be fixed when AbandonedObjectPool is moved to pool. Leaving open until move, at which time this should become a pool issue. > borrowObject from the AbandonedObjectPool hangs on a wait() method when the > WHEN_EXHAUSTED_BLOCK is set > ------------------------------------------------------------------------------------------------------- > > Key: DBCP-260 > URL: https://issues.apache.org/jira/browse/DBCP-260 > Project: Commons Dbcp > Issue Type: Improvement > Affects Versions: 1.2, 1.2.1, 1.2.2 > Environment: Windows XP, eclipse. JDK 1.6 > Reporter: Meir Shahar > Priority: Minor > Fix For: 1.4 > > > This bug is related to bugs #1, #38 & #102. Thought the bugs are closed, I > think there is a (edge condition) scenario that is not handled properly: > Config: > 10 active connections limit > RemoveAbandoned set to 'on' > RemoveAbandonedTimeout set to x (say 60 secs) > Suppose 10 connections were borrowed and the 11 th request was issued, all > within a time frame shorted then the timeout. > The first 10 requests are in methods that do not properly release the > connection. > This means that the 11 th thread is waiting indefinitely until a notify is > sent. > The 'non releasing' threads the first 10 connections hence no notification is > sent > The 'garbage collection' is performed by the calling AbandonedObjectPool > before calling the GenericObjectPool.borrowObject(...). This garbage > collection will not be called again and the wait() will stay locked though > some connections might be come available through timeout expiration. > The quick n dirty workaround is to setMaxWait(...) but still I think a better > solution will be along the lines of: > 1. Waiting for removeAbandonedTimeout secs > 2. Retry regular allocation -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.