Macros and the Wrangler Transformation

Macros can be freely specified. One caveat while specifying macros is that the #pragma load-directivescannot be part of the macro. They should be specified in the plugin configuration itself. The reason is that we have to register the user defined directives prior to initializing and executing the transform. Macros are dereferenced only at the initialization and execution state. A configuration could look something like this:

#pragma load-directives my-udd-1, my-udd2;
${macroed_recipe}
#pragma load-directives my-udd3
${another_recipe}

CDAP Documentation

Macros and the Wrangler Transformation

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