@Mark McGowan Does the answer helped to resolve your issue, Click on Accept button below to accept the answer,to close the thread and it would be great help to Community users to find solution quickly for these kind of issues. ... View more

@Mark McGowan You can do merging by using Correlation attribute name property in merge content processor, to use this property we cannot use convert record processor because each flowfile we need to keep date,hour attrbiutes as one attribute and use the attribute in merge content correlation attribute name. Then the merge content processor will merge with same attribute flowfiles into one flowfile. Please refer to below links for more details about correlation attribute usage https://community.hortonworks.com/questions/161827/mergeprocessor-nifi-using-the-correlation-attribut.html https://community.hortonworks.com/questions/55926/using-the-mergecontent-processor-in-nifi-can-i-use.html https://community.hortonworks.com/questions/87178/merge-fileflow-files-based-on-time-rather-than-siz.html For reference Convert record xml 178086-json-to-csv.xml ... View more