Github user ottobackwards commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2691#discussion_r187774759
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/default-grok-patterns.txt
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@@ -0,0 +1,115 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
--- End diff --
It if from the standard serialization services, it existed for the
GrokReader, I copied it over---
