程序包的使用
org.apache.flink.api.java.summarize.aggregation

使用org.apache.flink.api.java.summarize.aggregation的程序包

程序包	说明
org.apache.flink.api.java.summarize.aggregation

org.apache.flink.api.java.summarize.aggregation使用的org.apache.flink.api.java.summarize.aggregation中的类

类和说明
Aggregator Generic interface for aggregation.
BooleanSummaryAggregator Aggregator for Boolean type.
CompensatedSum Used to calculate sums using the Kahan summation algorithm.
DoubleSummaryAggregator Aggregator that can handle Double types.
FloatSummaryAggregator Aggregator that can handle Float types.
IntegerSummaryAggregator Aggregator that can handle Integer types.
LongSummaryAggregator Aggregator that can handle Long types.
NumericSummaryAggregator Generic aggregator for all numeric types creates a summary of a column of numbers.
ShortSummaryAggregator Aggregator that can handle Short types.
StringSummaryAggregator Aggregator that calculates statistics for String values.
TupleSummaryAggregator Aggregate tuples using an array of aggregators, one for each "column" or position within the Tuple.
ValueSummaryAggregator This is a generic Aggregator for Value types like StringValue, DoubleValue, etc.