arpadboda commented on a change in pull request #1013:
URL: https://github.com/apache/nifi-minifi-cpp/pull/1013#discussion_r580306578
##########
File path: libminifi/src/core/Processor.cpp
##########
@@ -277,6 +286,28 @@ void Processor::onTrigger(const
std::shared_ptr<ProcessContext> &context, const
}
}
+void Processor::callOnTrigger(const std::shared_ptr<ProcessContext>& context,
const std::shared_ptr<ProcessSession>& session) {
+ uint64_t num_incoming_flow_files_queued_before =
numIncomingFlowFilesQueued();
+ onTrigger(context, session); // virtual method overridden by subclasses
+ uint64_t num_incoming_flow_files_queued_after = numIncomingFlowFilesQueued();
+
+ if (num_incoming_flow_files_queued_before != 0 &&
num_incoming_flow_files_queued_before == num_incoming_flow_files_queued_after) {
Review comment:
As we don't hold lock on the incoming connection during the whole
ontrigger execution, flowfiles can be added there in the meanwhile. This
condition can be satisfied during normal operation.
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