I want to make an Mapping for the HBase write step generic. For that i used the inject metadata step.
The table that i use in the metadata injection is specified in the attachment.
However, i allways get to the error
Column "customer,registration_date" has already been defined for this mapping
i don't know why. I clearly pass this column just once. i specified a mapping name that was never used before.
What am i doing wrong?
Can anybody provide an example of the HBase write step with metadata injection?