@Override
protected void run() throws Exception {
// cache some references on the stack, to make the code more JIT friendly
final OneInputStreamOperator<IN, OUT> operator = this.headOperator;
final StreamInputProcessor<IN> inputProcessor = this.inputProcessor;
final Object lock = getCheckpointLock();
while (running && inputProcessor.processInput(operator, lock)) {
checkTimerException();
}
}
@Override
public void init() throws Exception {
StreamConfig configuration = getConfiguration();
TypeSerializer<IN> inSerializer = configuration.getTypeSerializerIn1(getUserCodeClassLoader());
int numberOfInputs = configuration.getNumberOfInputs();
if (numberOfInputs > 0) {
InputGate[] inputGates = getEnvironment().getAllInputGates();
inputProcessor =
new StreamInputProcessor<IN>(
inputGates,
inSerializer,
getCheckpointBarrierListener(),
configuration.getCheckpointMode(),
getEnvironment().getIOManager(),
getExecutionConfig().areTimestampsEnabled());
// make sure that stream tasks report their I/O statistics
AccumulatorRegistry registry = getEnvironment().getAccumulatorRegistry();
AccumulatorRegistry.Reporter reporter = registry.getReadWriteReporter();
inputProcessor.setReporter(reporter);
}
}
@Override
protected void cleanup() throws Exception {
inputProcessor.cleanup();
}