Github user MikeThomsen commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2448#discussion_r190658775
--- Diff:
nifi-nar-bundles/nifi-mongodb-bundle/nifi-mongodb-processors/src/main/java/org/apache/nifi/processors/mongodb/AbstractMongoProcessor.java
---
@@ -123,6 +124,7 @@
.displayName("Batch Size")
.description("The number of elements returned from the server
in one batch.")
.required(false)
+ .expressionLanguageSupported(true)
--- End diff --
Done.---
