AzureML pipeline designer pyarrow dependency while installing transformers

I was trying to import transformers in AzureML designer pipeline, it says for importing transformers and datasets the version of pyarrow needs to >=3.0.0, but then after upgrading pyarrow's version to 3.0.0 and importing transformers pyarrow version is reset to original version of 0.16.0. attaching few error samples. please have a look.

`Got exception when invoking script: 'RuntimeError: Failed to import transformers.trainer because of the following error (look up to see its traceback):To use datasets, the module pyarrow>=3.0.0 is required, and the current version of pyarrow doesn't match this condition.If you are running this in a Google Colab, you should probably just restart the runtime to use the right version of pyarrow.' azureml-designer-core 0.0.68 requires pyarrow==0.16.0, but you'll have pyarrow 3.0.0 which is incompatible.`

まず AzureML designer パイプラインでインポートを再現し、transformers と datasets の要件を、pyarrow を 0.16.0 に固定している azureml-designer-core 0.0.68 と比較してください。パイプラインで pyarrow がダウングレードされたりバージョン競合が発生したりすることなく transformers と datasets をインポートできれば完了です。

索引モデルが issue の本文から書いたものです。