TisonKun opened a new pull request #6737: [FLINK-10399] Refractor ParameterTool#fromArgs URL: https://github.com/apache/flink/pull/6737 ## What is the purpose of the change This pull request is about a refractor of `ParameterTool#fromArgs`. Current `ParameterTool#fromArgs` uses a weird implement by which flink developer would fail to parse it fast. The main problem is that, when parse args, we always try to get a key-value pair, but the implement iterate by a for loop, thus introduce weird flag/mutable variable and branches. ## Brief change log Refractor `ParameterTool#fromArgs`. Use a index(int iterator) and while loop to replace the original for loop. Make it more clear for the purpose and reduce weird branches and flags. Place some `final` modifier where I cannot get the idea that the variable is `final` when look at it. ## Verifying this change `ParameterToolTest` should guard the refractor. ## 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)`: (**yes**, but only the implementation, the interface and behavior kept.) - The serializers: (**no**) - The runtime per-record code paths (performance sensitive): (**no**) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, 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? (**no**)
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