148dc95eb1
PR gh-25038 introduced regressions in SimpleThreadScope and SimpleTransactionScope in Spring Framework 5.2.7. Specifically, if a thread-scoped or transaction-scoped bean has a dependency on another thread-scoped or transaction-scoped bean, respectively, a ConcurrentModificationException will be thrown on Java 11 or higher. The reason is that Java 11 introduced a check for concurrent modification in java.util.HashMap's computeIfAbsent() implementation, and such a modification can occur when a thread-scoped bean is being created in order to satisfy a dependency of another thread-scoped bean that is currently being created. This commit fixes these regressions by switching from HashMap to ConcurrentHashMap for the instance maps in SimpleThreadScope and SimpleTransactionScope. Closes gh-25618 |
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