Github user markap14 commented on a diff in the pull request: https://github.com/apache/nifi/pull/2509#discussion_r180211928 --- Diff: nifi-docs/src/main/asciidoc/developer-guide.adoc --- @@ -1751,6 +1751,12 @@ will handle your Processor: will always be set to `1`. This does *not*, however, mean that the Processor does not have to be thread-safe, as the thread that is executing `onTrigger` may change between invocations. + - `PrimaryNodeOnly`: Apache NiFi, when clustered, offers two modes of execution for Processors: "Primary Node" and + "All Nodes". Although running in all the nodes offers better parallelism, some Processors are known to cause unintended + behaviors when run in multiple nodes. For instance, some Processors lists or reads files from remote filesystems. If such --- End diff -- Typo in the docs: think it should read "some Processors list or read files" rather than "lists of reads"