jrthe42 opened a new pull request #7014: [FLINK-10770] [Table & SQL] Some generated functions are not opened properly. URL: https://github.com/apache/flink/pull/7014 ## What is the purpose of the change When transforming sql to execution plan, some generated functions' `open` method are not called., this may cause exception if the UDFs need be opened. This PR fix this issue. ## Brief change log - Call `open` method after generated functions are complied and instantiated. ## Verifying this change This change added tests and can be verified as follows: - org.apache.flink.table.runtime.stream.table.UdfITCase - org.apache.flink.table.runtime.batch.table.UdfITCase ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **no**) - If yes, how is the feature documented? (**not** applicable / docs / JavaDocs / not documented)
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