<p>Seems I remembered wrongly or I didn't actually identify the cause before - it's actually <code>deadlock_retry</code> that is the problem and it isn't monkey patchable because it is called at load time.</p>
<p>I have now published a fixed version as <a href="https://rubygems.org/gems/openstreetmap-deadlock_retry">openstreetmap-deadlock_retry</a> which we use to work around this - the original has not been updated for five years and recent PRs have been closed on the grounds that it is no longer supported.</p>

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