I updated the changelog and I think we are ready for a patch release.

Phil

On Sat, Dec 27, 2025 at 12:24 PM Gary Gregory <[email protected]>
wrote:

> That all sounds good. I can create a release candidate anytime if you want.
>
> Gary
>
> On Sat, Dec 27, 2025 at 1:43 PM Phil Steitz <[email protected]> wrote:
> >
> > Given that the regression reported in POOL-427 is significant, I think we
> > should move quickly to validate the fix for the regression (or revert
> back
> > to the previous version of the method) and create a patch release as soon
> > as possible.  The investigations around POOL-413 are great and should
> > continue in parallel.  It would be great if we could discuss ideas for
> how
> > to address the core issue there here instead of spread across PRs.
> >
> > Phil
> >
> > On Sat, Dec 27, 2025 at 11:10 AM Phil Steitz <[email protected]>
> wrote:
> >
> > > I just reverted the added sync in PR #452, which violates the "no
> factory
> > > methods while holding locks" invariant.  Strangely, the added tests for
> > > POOL-426 still pass.  I think the race condition is still present and
> the
> > > general problem in POOL-413 remains unresolved.
> > >
> > > On Thu, Dec 25, 2025 at 3:55 PM Phil Steitz <[email protected]>
> wrote:
> > >
> > >> The fix for POOL-425 included in the 2.13.0 release introduced a
> > >> regression that makes addObject no-op when maxIdle is set to a
> negative
> > >> value (no limit).  The POOL-425 fix also failed to account for a race
> > >> condition reported in POOL-426.
> > >>
> > >> I have created a PR https://github.com/apache/commons-pool/pull/452
> that addresses
> > >> both issues.  To avoid the race condition, I had to add
> synchronization to
> > >> addObject.  I tried several ways to avoid the race by modifying
> create (as
> > >> suggested by Raju Gupta, the OP for POOL-426) but I could not find a
> way to
> > >> do that safely without introducing other issues.  I don't see the
> added
> > >> sync in addObject as critical as this method is not used in hot code
> paths
> > >> internally and the lock that it acquires is the same lock that create
> will
> > >> subsequently acquire if it proceeds to add an object.
> > >>
> > >> The regression could be addressed in a simpler way by just fixing the
> > >> error in the code (failure to check for negative maxIdle).   If there
> are
> > >> any doubts about the PR above, I am happy to make that simple
> change.  In
> > >> any case, we should patch this quickly as it will likely break some
> apps
> > >> that use addObject with maxIdle unilimited.
> > >>
> > >> Thanks, all, and sorry for my mistake in the POOL-425 fix.
> > >>
> > >> Phil
> > >>
> > >
>
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