jerrypeng opened a new issue #3993: Fail to update functions in Effectively-once mode URL: https://github.com/apache/pulsar/issues/3993 **Describe the bug** Cannot update a function that was started in effectively-once mode. **To Reproduce** If I submit a function with function config: ``` name: java-jerry-test tenant: public namespace: default jar: pulsar-functions/java-examples/target/pulsar-functions-api-examples.jar className: org.apache.pulsar.functions.api.examples.TestFunction inputSpecs: persistent://public/default/java-input: receiverQueueSize: 100 output: persistent://public/default/java-output parallelism: 1 processingGuarantees: EFFECTIVELY_ONCE ~ ``` Attempting to update the parallelism: ``` Jerrys-MBP:incubator-pulsar jerrypeng$ ./bin/pulsar-admin functions update --name java-jerry-test --parallelism 4 Retain Orderning cannot be altered Reason: Retain Orderning cannot be altered ```
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