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Writing GenericUDAFs: A Tutorial User-Defined Aggregation Functions (UDAFs) are an excellent way to integrate advanced data-processing into Hive. Hive 阅读全文
posted @ 2018-09-06 20:34
大数据从业者FelixZh
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Writing UDTF's Writing UDTF's GenericUDTF Interface GenericUDTF Interface A custom UDTF can be created by extending the GenericUDTF abstract class and 阅读全文
posted @ 2018-09-06 20:32
大数据从业者FelixZh
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Creating Custom UDFs First, you need to create a new class that extends UDF, with one or more methods named evaluate. package com.example.hive.udf; im 阅读全文
posted @ 2018-09-06 20:30
大数据从业者FelixZh
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