@Rodolphe Fontaine Looks like a similar thread is already there on this topic, Hence i am posting the solution of that thread here: https://community.hortonworks.com/questions/111800/where-is-the-data-for-the-folder-sandboxtutorial-i.html . The zip file you are referring to can be downloaded from https://github.com/hortonworks/data-tutorials/blob/master/tutorials/hdf/analyze-transit-pattern-with-apache-nifi/assets/transit_data_seed.zip . You might need to create the path manually and set the right
permissions to allow NiFi to unzip and process the files properly. To do
so, set the nifi user as the owner for the input and rawtransitevents folders. .
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