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com.linkedin.feathr.common

CanConvertToAvroRDD

trait CanConvertToAvroRDD extends AnyRef

If an AnchorExtractor only works on a Avro record, it should extends this trait, and use convertToAvroRdd to do a one-time batch conversion of DataFrame to RDD of their choice. convertToAvroRdd will be called by Feathr engine before calling getKeyFromRow() and getFeaturesFromRow() in AnchorExtractor.

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  1. abstract def convertToAvroRdd(df: DataFrame): RDD[IndexedRecord]

    One time batch converting the input data source into a RDD[IndexedRecord] for feature extraction later

    One time batch converting the input data source into a RDD[IndexedRecord] for feature extraction later

    df

    input data source

    returns

    batch preprocessed dataframe, as RDD[IndexedRecord]

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