public interface TridentCollector
Interface for publishing tuples to a stream and reporting exceptions (to be displayed in Storm UI).
Trident components that have the ability to emit tuples to a stream are passed an instance of this interface.
For example, to emit a new tuple to a stream, you would do something like the following:
java collector.emit(new Values("a", "b", "c"));
Emits a tuple to a Stream.
values- a list of values of which the tuple will be composed
Flush any buffered tuples (when batching is enabled).
void reportError(Throwable t)
Reports an error. The corresponding stack trace will be visible in the Storm UI.
Note that calling this method does not alter the processing of a batch. To explicitly fail a batch and trigger a replay, components should throw
t- The instance of the error (Throwable) being reported.
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