[5.28] Fix race condition in bolt connection pool - #1348
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robsdedude merged 4 commits intoSep 24, 2026
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The pool tries to acquire an idle connection first. If no idle connection is available, it puts itself into a queue waiting for another thread/task to return a connection before trying again. However, there is no protection against a connection being returned between the attempt to acquire an idle connection and the enqueuing. Therefore, it could happen that a thread waits indefinitely like this: Assume max pool size of 1 * T1 creates & acquires con1 * T2 checks for idle connections => None * T1 releases con1 * T2 acquires lock to be able to wait for the release event * T1 terminates * T2 times out waiting for Godot
robsdedude
marked this pull request as ready for review
September 23, 2026 21:06
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Backport of: #1346
Closes: DRIVERS-578