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https://issues.apache.org/jira/browse/POOL-288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14328911#comment-14328911
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Phil Steitz commented on POOL-288:
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How do you know the pool is growing beyond the max configured size? Are you
getting values from getNumActive + getNumIdle beyond the configured max total?
What version of pool are you running?
> Objects growing out of bound (beyond max limit)
> -----------------------------------------------
>
> Key: POOL-288
> URL: https://issues.apache.org/jira/browse/POOL-288
> Project: Commons Pool
> Issue Type: Bug
> Reporter: Abin
>
> My messaging application is a stand-alone spring boot application. I am
> maintaining an apache commons pool of smpp sessions to be kept alive and used
> when needed. But the pool starts to grow beyond its max limit. I have
> explained my application design below. Any help/suggestion would be greatly
> appreciated.
> Current Design
> I have an object pool of type ZdSmppSession (Apache Commons Pool), with pool
> size set to 40
> Each ZdSmppSession has the following
> 1. A sendMessage method
> 2. A private variable of type com.cloudhopper.smpp.SmppSession
> 3. A PostConstruct method
> The Post Construct method does the following
> 1. initiates a handshake and initialize the private variable
> com.cloudhopper.smpp.SmppSession
> 2. schedules an enquire link to be sent every 60 secs
> I have about 120 worker threads which does the following
> 1. Read message from rmq
> 2. Get a ZdSmppSession object from pool
> 3. Calls sendMessage on the object
> 4. Release it back to pool
> So when a ZdSmppSession object is created in the pool it is ready to send
> messages
> When ZdSmppSession is released back to pool it keeps the connection alive by
> sending enquire link every 60 secs. A session object is never destructed.
> Issue
> The issue I am facing is that the pool grows beyond its maximum limit, even
> though the max limit is set to 40.
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