Deploying models on bigdata platforms like Hadoop and Spark Where exactly bigdata platforms fit in to a data science/ machine learning projects ?

Say I have a large dataset for a binary classification problem - cats and dogs.

Now I need to create a model for real time classification

Here is my question.

1 Since dataset is huge I can make use any distributed platform for faster computation and model creation right?

2 Once the model is ready, then there is no need of these distributed platform right ? or are they needed for feature extractions ?
1 Since dataset is huge I can make use any disributed platform for faster computaion and model creation right?


Yes, that is what distributed platforms are for.


  2 Once the model is ready, then there is no need of these disributed
  platform right ? or are they needed for feature extractions ?


Yes for data extraction, feature generation for scoring and scoring your dataset (the actual reason you trained at model for!), you would still need the platform as that data is also likely to be huge.