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Posted to issues@commons.apache.org by "Phil Steitz (JIRA)" <ji...@apache.org> on 2007/12/20 00:29:43 UTC

[jira] Commented: (POOL-117) StackObjectPool, SoftReferenceObjectPool borrowObject can loop indefinitely when new instances fail validation

    [ https://issues.apache.org/jira/browse/POOL-117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12553531 ] 

Phil Steitz commented on POOL-117:
----------------------------------

Fixed in 1.4 release branch in r605736 by modifying borrowObject to throw NoSuchElementException when activate or validate fails on newly created instances (consistent with GenericObjectPool)

> StackObjectPool, SoftReferenceObjectPool borrowObject can loop indefinitely when new instances fail validation
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: POOL-117
>                 URL: https://issues.apache.org/jira/browse/POOL-117
>             Project: Commons Pool
>          Issue Type: Bug
>    Affects Versions: 1.3
>            Reporter: Phil Steitz
>            Priority: Minor
>             Fix For: 1.4
>
>
> The borrowObject methods in StackObjectPool, SoftReferenceObjectPool are synchronized and do not bound the number of attempts to create a valid instance when the pool is exhausted.  When a new instance is created, if activation or validation fails, the code continues (without bound) to retry the make-activate-validate sequence.  This can lead to an infinite loop if the factory is unable to create valid instances.

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