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The migration ETL is written in Spring Batch in tis-revalidation-migration service.

It consists of an ItemRreader to read data from the legacy Reval MySQL database, an ItemProcessor to map the trainee data into the format we need in the new Reval, and an ItemWriter to insert the data into new Reval MongoDB.

How to run:

  1. Clear/drop the revalidation.recommendation collection in the Reval MongoDB

  2. The migration will start automatically once the service runs. To run the task, change the number of the desired tasks of the tis-revalidation-migration service. Or restart the service if it is running already.

    3. Data will be populated to the revalidation.recommendation collection in the Reval MongoDB after migration.

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