pvillard31 commented on a change in pull request #4405:
URL: https://github.com/apache/nifi/pull/4405#discussion_r457225412
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File path: nifi-docs/src/main/asciidoc/user-guide.adoc
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@@ -755,14 +755,19 @@ the parallelization that NiFi uses to process the data.
However, there are sever
is one in which each incoming FlowFile contains references to several other
data items, such as a list of files in a directory. The user may want to
process the entire listing before allowing any other data to enter the Process
Group.
+When the FlowFile Concurrency is configured to "Single Batch Per Node," the
Input Ports will behave similarly to the way that they behave in the
+"Single FlowFile Per Node" mode, but when a FlowFile is ingested, the Input
Ports will continue to ingest all data until all of the queues feeding
+the Input Ports have been emptied. At that point, they will not bring any more
data into the Process Group until all data has finished processing and
+has left the Process Group (see note on <<Connecting_Batch_Oriented_Groups>>
below).
+
NOTE: The FlowFile Concurrency controls only when data will be pulled into the
Process Group from an Input Port. It does not prevent a Processor within the
Process Group from ingesting data from outside of NiFi.
While the FlowFile Concurrency dictates how data should be brought into the
Process Group, the Outbound Policy controls the flow of data out of the Process
Group.
There are two available options for the Outbound Policy: "Stream When
Available" and "Batch Output". The default value is "Stream When Available."
When this mode is used,
data that arrives at an Output Port is immediately transferred out of the
Process Group, assuming that no backpressure is applied.
-The second option is to use "Batch Output." When this Outbound Policy is
selected, the Outport Ports will not transfer data out of the Process Group
until
+The second option is to use "Batch Output." When this Outbound Policy is
selected, the Output Ports will not transfer data out of the Process Group until
Review comment:
```suggestion
The second option is to use "Batch Output". When this Outbound Policy is
selected, the Output Ports will not transfer data out of the Process Group until
```
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