# TiDB Lightning Overview
+ TiDB Lightning is a tool used for importing data at TB scale to TiDB clusters
+ Following import file formats are supported:
  + Files exported by Dumpling (SQL or CSV)
  + CSV files
  + Apache Parquet backup files generated by Amazon Aurora
+ Import data from:
  + Local disk
  + Amazon S3
  + Google Cloud Storage
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You can't generate a parquet file with your Python program and read it with Lightning. It must be an Aurora, parquet backup file.