to answer myself:
I should have said I am creating the PCollection<Data> using Create.of which
apparently leads to this getDefaultCoder() implementation:
CoderRegistry.getDefaultCoder(T exampleValue) which doesn't try inspecting the
annotation (as opposed CoderRegistry.getDefaultCoder(Class<T> clazz) ). So I
guess I have to explicitly use the create.of().withCoder().
antony.
On Monday, 13 March 2017, 13:37, Antony Mayi <[email protected]> wrote:
Hi,
trying to create PCollection of my custom data class but keep failing due to
the CannotProvideCoderException:
My class is declared as follows:
@DefaultCoder(SerializableCoder.class) public class Data<DataT extends
BaseData> implements Serializable {
and it fails like this:
Caused by: org.apache.beam.sdk.coders.CannotProvideCoderException: Cannot
provide coder based on value with class my.project.Data: No CoderFactory has
been registered for the class.
why it doesn't pick the coder?
thanks,Antony.
