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Upcoming Features in Pig 0.8: Dynamic Invokers

Posted in programming by squarecog on August 20, 2010

Pig release 0.8 is scheduled to be feature-frozen and branched at the end of August 2010. This release has many, many useful new features, mostly addressing usability. In this series of posts, I will demonstrate some of my favorites from this release.

Pig 0.8 will have a family of built-in UDFs called Dynamic Invokers. The idea is simple: frequently, Pig users need to use a simple function that is already provided by standard Java libraries, but for which a UDF has not been written. Dynamic Invokers allow a Pig programmer to refer to Java functions without having to wrap them in custom Pig UDFs, at the cost of doing some Java reflection on every function call.

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