Describe the bug
We are receiving every now and then java ConcurrentModificationException from the spring cloud code in the SmartCompositeMessageConverter class on the for Loop of the toMessage(line 164) method. Haven't found any reproduction step possible.
Spring cloud version: 2025.1.2
Sample
java.util.ConcurrentModificationException at java.base/java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[na:na] at java.base/java.util.ArrayList$Itr.next(Unknown Source) ~[na:na] at org.springframework.cloud.function.context.config.SmartCompositeMessageConverter.toMessage(SmartCompositeMessageConverter.java:165) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.SimpleFunctionRegistry$FunctionInvocationWrapper.convertOutputIfNecessary(SimpleFunctionRegistry.java:1312) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.SimpleFunctionRegistry$FunctionInvocationWrapper.doApply(SimpleFunctionRegistry.java:843) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.SimpleFunctionRegistry$FunctionInvocationWrapper.apply(SimpleFunctionRegistry.java:656) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.observability.ObservationFunctionAroundWrapper.lambda$nonReactorStream$0(ObservationFunctionAroundWrapper.java:50) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at io.micrometer.observation.Observation.observe(Observation.java:634) ~[micrometer-observation-1.16.6.jar!/:1.16.6] at org.springframework.cloud.function.observability.ObservationFunctionAroundWrapper.nonReactorStream(ObservationFunctionAroundWrapper.java:50) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.observability.ObservationFunctionAroundWrapper.doApply(ObservationFunctionAroundWrapper.java:45) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.FunctionAroundWrapper.apply(FunctionAroundWrapper.java:45) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.SimpleFunctionRegistry$FunctionInvocationWrapper.apply(SimpleFunctionRegistry.java:653) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.stream.function.StreamBridge.send(StreamBridge.java:215) ~[spring-cloud-stream-5.0.2.jar!/:5.0.2] at org.springframework.cloud.stream.function.StreamBridge.send(StreamBridge.java:176) ~[spring-cloud-stream-5.0.2.jar!/:5.0.2] at org.springframework.cloud.stream.function.StreamBridge.send(StreamBridge.java:171) ~[spring-cloud-stream-5.0.2.jar!/:5.0.2]]
Describe the bug
We are receiving every now and then java ConcurrentModificationException from the spring cloud code in the SmartCompositeMessageConverter class on the for Loop of the toMessage(line 164) method. Haven't found any reproduction step possible.
Spring cloud version: 2025.1.2
Sample
java.util.ConcurrentModificationException at java.base/java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[na:na] at java.base/java.util.ArrayList$Itr.next(Unknown Source) ~[na:na] at org.springframework.cloud.function.context.config.SmartCompositeMessageConverter.toMessage(SmartCompositeMessageConverter.java:165) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.SimpleFunctionRegistry$FunctionInvocationWrapper.convertOutputIfNecessary(SimpleFunctionRegistry.java:1312) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.SimpleFunctionRegistry$FunctionInvocationWrapper.doApply(SimpleFunctionRegistry.java:843) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.SimpleFunctionRegistry$FunctionInvocationWrapper.apply(SimpleFunctionRegistry.java:656) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.observability.ObservationFunctionAroundWrapper.lambda$nonReactorStream$0(ObservationFunctionAroundWrapper.java:50) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at io.micrometer.observation.Observation.observe(Observation.java:634) ~[micrometer-observation-1.16.6.jar!/:1.16.6] at org.springframework.cloud.function.observability.ObservationFunctionAroundWrapper.nonReactorStream(ObservationFunctionAroundWrapper.java:50) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.observability.ObservationFunctionAroundWrapper.doApply(ObservationFunctionAroundWrapper.java:45) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.FunctionAroundWrapper.apply(FunctionAroundWrapper.java:45) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.function.context.catalog.SimpleFunctionRegistry$FunctionInvocationWrapper.apply(SimpleFunctionRegistry.java:653) ~[spring-cloud-function-context-5.0.3.jar!/:5.0.3] at org.springframework.cloud.stream.function.StreamBridge.send(StreamBridge.java:215) ~[spring-cloud-stream-5.0.2.jar!/:5.0.2] at org.springframework.cloud.stream.function.StreamBridge.send(StreamBridge.java:176) ~[spring-cloud-stream-5.0.2.jar!/:5.0.2] at org.springframework.cloud.stream.function.StreamBridge.send(StreamBridge.java:171) ~[spring-cloud-stream-5.0.2.jar!/:5.0.2]]