sijie opened a new pull request #2570: Fix BC issue in functions trigger function submitted by old CLI URL: https://github.com/apache/incubator-pulsar/pull/2570 *Motivation* A BC issue was introduced by #2501. If a function is submitted by old CLI, which only containers topics to serde map. The new function worker will fail trigger request because it can't find input specs. ``` 17:28:32.105 [function-web-7-9] ERROR org.apache.pulsar.functions.worker.rest.api.FunctionsImpl - Function in trigger function has more than 1 input topics @ /public/default/ex ``` *Changes* The functions worker should handle BC. *Tests* No tests are added here. Since it requires a BC testing framework to be able to submit a function to a new functions worker by old CLI. Created #2569 for adding a BC testing framework to cover such BC issues.
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