Shu, I did the way you suggested and yet the value comes empty. I need to save the value of a property at the beginning of my stream to reuse it in my ReplaceText processor according to the attached image. After GetMongo I lose this property. Please, what is the best way to perform this procedure in NIFI? ... View more

Matt, I mean a group variable. In my flow, I need to save the value of an attribute at the beginning of the stream to reuse it from the middle of the stream in processor ReplaceText, after a GetMongo processor, however, after I create the variable I can not update the value of that variable. I also tried to save the content of this attribute in state value, however, I can not retrieve it later. Look at this example in the attached image. Thank you! ... View more

Shu, I realized that the Listfile processor did not pick up the same file more than once, even clearing the status. For example, I had processed file1.gz and moved it to another directory, stopped all processors, cleared the status of ListFile and UpdateAttribute, and restarted processing, and even then the ListFile processor did not pick up file1.gz again. Does Nifi store the reference with this file name in some directory of it that I should delete? Thank you! ... View more

Shu, I read the article https://community.hortonworks.com/articles/191080/trigger-basedserial-data-processing-in-nifi.html but I did not understand how the RouteOnAttribute processor was configured. Apparently the firstFF property was created, however, I did not see the value of this property in the article? Could you please send a simple example of how to process a list of files, one at a time with the wait and notify processors? Thank you! ... View more