org.apache.flink.streaming.api.functions.source.datagen.DataGenerator<T> generator
DataGeneratorMapper.SerializableFunction<A,B> mapper
int precision
int scale
double min
double max
org.apache.flink.streaming.api.functions.source.datagen.DataGenerator<T>[] fieldGenerators
String[] fieldNames
String fieldDelim
long maxTimestamp
long delay
long maxTimestamp
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