I have this code trying to read from a topic however the flink process
comes up and waits forever even though there is data in the topic. Not sure
why? Has anyone else seen this problem?
StreamExecutionEnvironment env = StreamExecutionEnvironment
.*createLocalEnvironment*();
Properties properties = *new* Properties();
properties.setProperty("bootstrap.servers", "xxxx:9092");
properties.setProperty("group.id", "test1");
properties.setProperty("auto.offset.reset", "earliest");
FlatMapFunction<Integer, Tuple2<Integer, Integer>> flatMapper = //something
DataStream<String> stream = env
.addSource(*new* FlinkKafkaConsumer010<>("test", *new*
SimpleStringSchema(), properties));
stream.map(s -> Integer.*valueOf*(s)).flatMap(flatMapper).returns(
*new* TypeHint<Tuple2<Integer, Integer>>() {
}).print();
JobExecutionResult *res* = env.execute();
02/17/2017 16:50:25 Source: Custom Source -> Map -> Flat Map -> Sink:
Unnamed(4/4) switched to RUNNING
02/17/2017 16:50:25 Source: Custom Source -> Map -> Flat Map -> Sink:
Unnamed(1/4) switched to RUNNING
02/17/2017 16:50:25 Source: Custom Source -> Map -> Flat Map -> Sink:
Unnamed(2/4) switched to RUNNING
