Class DataToDoubleSummaryWithModeSketchUDAF

  • All Implemented Interfaces:
    org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver, org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver2

    public class DataToDoubleSummaryWithModeSketchUDAF
    extends DataToSketchUDAF
    This is an example of a concrete UDAF based on the abstract DataToSketchUDAF if extra arguments are needed. For a simpler example with no extra arguments see DataToDoubleSummarySketchUDAF.
    • Constructor Detail

      • DataToDoubleSummaryWithModeSketchUDAF

        public DataToDoubleSummaryWithModeSketchUDAF()
    • Method Detail

      • getEvaluator

        public org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator getEvaluator​(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFParameterInfo info)
                                                                                throws org.apache.hadoop.hive.ql.parse.SemanticException
        Specified by:
        getEvaluator in interface org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver2
        Overrides:
        getEvaluator in class DataToSketchUDAF
        Throws:
        org.apache.hadoop.hive.ql.parse.SemanticException
      • createEvaluator

        public org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator createEvaluator()
        Description copied from class: DataToSketchUDAF
        This is needed because a concrete UDAF is going to have its own concrete evaluator static inner class.
        Specified by:
        createEvaluator in class DataToSketchUDAF
        Returns:
        an instance of evaluator
      • checkExtraArguments

        protected void checkExtraArguments​(org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector[] inspectors)
                                    throws org.apache.hadoop.hive.ql.parse.SemanticException
        Description copied from class: DataToSketchUDAF
        Override this if your UDF has more arguments
        Overrides:
        checkExtraArguments in class DataToSketchUDAF
        Parameters:
        inspectors - array of inspectors
        Throws:
        org.apache.hadoop.hive.ql.parse.SemanticException - if anything is wrong