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The following page has been changed by ZhengShao: http://wiki.apache.org/hadoop/Hive/DeveloperGuide ------------------------------------------------------------------------------ == Pluggable interfaces == === SerDe - how to add a new SerDe === + Please refer to [http://www.slideshare.net/ragho/hive-user-meeting-august-2009-facebook Hive User Group Meeting August 2009] Page 64-73. - === UDFs and UDAFs - how to add new UDFs and UDAFs === - * For the UDF named "myudf", do the following: - * First, add the code that implements the UDF under ql/src/java/org/apache/hadoop/hive/ql/udf/UDFMyudf.java - * Second, register your UDF at java/org/apache/hadoop/hive/ql/exec/FunctionRegistry.java - * Third, augment one of the UDF test queries; for UDFs that operate on strings, udf1 - 5 + [[http://www.slideshare.net/ragho/hive-user-meeting-august-2009-facebook]] + Please refer to [http://www.slideshare.net/ragho/hive-user-meeting-august-2009-facebook Hive User Group Meeting August 2009] Page 74-87. +
