The reason for this is that FlinkKafkaProducer010 is a peculiar hybrid of a StreamSink (a subclass of StreamOperator) and SinkFunction/RichFunction (the interface for user functions). The runtime context of this class is only set when you use it as an operator, which happens when you use FlinkKafkaProducer010.writeToKafkaWithTimestamps(). When used as a SinkFunction, i.e. DataStream.addSink() this doesn’t work.
I created an issue for resolving this in a general way: https://issues.apache.org/jira/browse/FLINK-6323 > On 17. Apr 2017, at 13:15, sohimankotia <sohimanko...@gmail.com> wrote: > > Thanks for Reply Gordon . I am not doing any unit test . Its production code > . > > public class MyClass extends FlinkKafkaProducer010<BasicInfoTuple> > > and then > > incrementCounter("items-not-found", this.getRuntimeContext()); > > > > -- > View this message in context: > http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Why-I-am-getting-Null-pointer-exception-while-accessing-RuntimeContext-in-FlinkKafkaProducer010-tp12633p12635.html > Sent from the Apache Flink User Mailing List archive. mailing list archive at > Nabble.com.
