I am trying to use the `BulkMessageWriterBolt` to write a specific tuple
field named "measurement" to a Kafka topic.
- id: "kafkaBolt"
className: "org.apache.metron.writer.bolt.BulkMessageWriterBolt"
constructorArgs:
- "${kafka.zk}"
configMethods:
- name: "withMessageWriter"
args:
- ref: "kafkaWriter"
- name: "withMessageGetter"
args:
- "measurement"
Rather than wanting the name of a field, it wants the name of a valid
`MessageGetters` enum; either RAW or NAMED. It seems like there is no way
for me to plugin a `NamedMessageGetter` with a custom field name like
"measurement".
Am I missing something? Is there a way to do this out-of-the-box?
