Kafka Sinking from DataSet

[Jonny Graham]

Hi,

I'm using HadoopInputs.readHadoopFile() to read a Parquet file, which gives me a DataSource which (as far as I can see) is basically a DataSet.

I want to write data from this source into Kafka, but the Kafka sink only works on a DataStream.

 

There's no easy way to convert my DataSet to a DataStream.

 

What's the canonical way to do this in Flink? I could just use a Kafka producer directly on my data (map on the DataSet?), or I could output to a file (after manipulating my dataset) and use something other than Flink to load the data into Kafka. I'm not sure as to what the correct approach is.

 

Ideally I'd like to get exactly-once semantics but I doubt that can be done easily since I will be writing a lot of events to Kafka

 

Thanks,

Jonny

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