-Can dynamic Classes be accessible to Mappers/Reducers?
Jay Vyas 2012-11-12, 23:58
Im trying to dynamically create a java class at runtime and submit it as a
How does the Mapper (or for that matter, Reducer) use the data in the Job
object? That is, how does it load a class? Is the job object serialized,
along with all the info necessary to load a class?
The reason im wondering is that, in all reality, the class im creating will
not be on the classpath of JVM's in a distributed environment. But indeed,
it will exist when the Job is created . So Im wondering wether simply
"creating" a dynamic class in side of the job executioner will be
serialized and sent over the wire in such a way that it can be instantiated
in a different JVM or not.
Zizon Qiu 2012-11-13, 01:54
Bertrand Dechoux 2012-11-13, 08:55
Jay Vyas 2012-11-13, 11:50