gaoyunhaii opened a new pull request #11326: [FLINK-11427][formats] Add protobuf parquet support for StreamingFileSink URL: https://github.com/apache/flink/pull/11326 ## What is the purpose of the change This PR adds support for writing protobuf records to parquet files. Since the tests need to generate protobuf classes from the proto files, two maven plugins are used: 1. [os-maven-plugin](https://github.com/trustin/os-maven-plugin) is used to detect the os version so that we could download the suitable `protoc` compiler. 2. [protobuf-maven-plugin](https://github.com/xolstice/protobuf-maven-plugin) is used to class `protoc` to generate the classes. Both of the two plugins are using Apache Licence. ## Brief change log *(for example:)* - f5bd9b3f4d4b4aec514c974428765425356a7a43 hotfix that renames existing Avro Parquet test to keep consistency with the new tests. - f95e145f5eb004304fc918802147797fb52a6799 hotfix that fixes the generic parameter usage in Avro Parquet test. - 102d6df995f418e9d131380bfff3b747f7d7814a adds the protobuf parquet support. ## Verifying this change This change added tests and can be verified as follows: - Added unit test that validates the read records are consistent with the written ones. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): **no** - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: **no** - The serializers: **no** - The runtime per-record code paths (performance sensitive): **no** - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: **no** - The S3 file system connector: **no** ## Documentation - Does this pull request introduce a new feature? **no** - If yes, how is the feature documented? **not applicable**
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