szaszm commented on a change in pull request #900:
URL: https://github.com/apache/nifi-minifi-cpp/pull/900#discussion_r501010516



##########
File path: extensions/libarchive/MergeContent.cpp
##########
@@ -72,10 +74,12 @@ core::Property MergeContent::AttributeStrategy(
                     "only the attributes that exist on all FlowFiles in the 
bundle, with the same value, will be preserved.")
   
->withAllowableValues<std::string>({merge_content_options::ATTRIBUTE_STRATEGY_KEEP_COMMON,
 merge_content_options::ATTRIBUTE_STRATEGY_KEEP_ALL_UNIQUE})
   
->withDefaultValue(merge_content_options::ATTRIBUTE_STRATEGY_KEEP_COMMON)->build());
+core::Property MergeContent::FlowFileSerializer(
+  core::PropertyBuilder::createProperty("Flow File Serializer")
+  ->withDescription("Determines how to flow files should be serialized before 
merging")
+  
->withAllowableValues<std::string>({merge_content_options::SERIALIZER_PAYLOAD, 
merge_content_options::SERIALIZER_FLOW_FILE_V3})
+  ->withDefaultValue(merge_content_options::SERIALIZER_PAYLOAD)->build());

Review comment:
       I agree on the implementation level, but on the interface, compatibility 
with NiFi offers a greater benefit than separation of concerns IMO. Now you can 
create a tar of FFv3-serialized flow files, but what would you do with it if 
NiFi can't handle it?




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