Github user pvillard31 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2698#discussion_r188344570
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/ExtractGrok.java
---
@@ -102,6 +103,15 @@
.addValidator(StandardValidators.FILE_EXISTS_VALIDATOR)
.build();
+ public static final PropertyDescriptor KEEP_EMPTY_CAPTURES = new
PropertyDescriptor.Builder()
+ .name("Keep Empty Captures")
+ .description("If true, then empty capture values will be
included in the returned capture map.")
+ .required(false)
--- End diff --
since it's an "allowable values"-type of property, we usually set
required=true
---
