Example of a User Defined Function (UDF) for Apache Hive
Build and use a Hive UDF in 1 minute
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Just use the precompiled myudfs.jar
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Or compile it with:
javac -cp $(ls /usr/lib/hive/lib/hive-exec*.jar):/usr/lib/hadoop/hadoop-common.jar org/hue/udf/MyUpper.java
jar -cf myudfs.jar -C . .