Pipeline ParallelRunStep: Parquet Output

There seems to be a lack of documentation regarding possible output data of ParallelRunStep, as all the examples in documentation only mention writing the output as delimited file. Is there a possibility to use parquet as an alternative output format? I am currently facing the issue, that the output data contains several characters that kind of mess up AzureML's parsing ability for delimited files (newline characters within data, seperator characters within data, etc.).

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* ID: f69044d5-213e-a764-31dd-24f8368212b7
* Version Independent ID: 23d38b1c-974a-b2fc-332a-70d7500e1751
* Content: [azureml.pipeline.steps.ParallelRunStep class - Azure Machine Learning Python](https://docs.microsoft.com/en-us/python/api/azureml-pipeline-steps/azureml.pipeline.steps.parallelrunstep?view=azure-ml-py)
* Content Source: [AzureML-Docset/stable/docs-ref-autogen/azureml-pipeline-steps/azureml.pipeline.steps.ParallelRunStep.yml](https://github.com/MicrosoftDocs/MachineLearning-Python-pr/blob/live/AzureML-Docset/stable/docs-ref-autogen/azureml-pipeline-steps/azureml.pipeline.steps.ParallelRunStep.yml)
* Service: **machine-learning**
* Sub-service: **core**
* GitHub Login: @DebFro
* Microsoft Alias: **debfro**

從 Issue 中連結的 ParallelRunStep 類別頁面及其內容來源 AzureML-Docset/stable/docs-ref-autogen/azureml-pipeline-steps/azureml.pipeline.steps.ParallelRunStep.yml 開始。檢查文件中記錄了哪些輸出格式，以及是否支援 Parquet；當文件明確回答輸出格式問題並解釋適用的行為時，即視為完成。

由索引模型根據 Issue 內容生成。