@Krishna Sreenivas there is no default value. Empty value (null) means - that first-time records (which aren't detected as dups yet) will stay in a cache forever (if you have cache service with persistence directory defined, otherwise - till restart). If you define, for example, 1 min, that means, that during 1 min, all dups will be detected, but after that time, another record won't be detected as a dup, as it will be aged off (and removed) from cache. ... View more

@Krishna Sreenivas Could you add more details regards to your use case for extracting 100 filed values? If you are extracting the values and preparing csv file then sending the csv file into Downstream applications? if this is the case then -> if you are using NiFi-1.2+ use ConvertRecord processor to convert the Json Format data into CSV format then send to your down stream systems. ... View more