The description of Nifi functions ends with the statement, After evaluating expression language functions, all attributes are stored as type String. https://nifi.apache.org/docs/nifi-docs/html/expression-language-guide.html#functions How do you plan to use the attribute down stream? If you're just looking for a way to have your output become an attribute, the following page has a nice example, http://funnifi.blogspot.com/2016/02/executescript-processor-hello-world.html ... View more

Arun, yes, timestamp is a supported datatype. Here is a link to the doc: https://avro.apache.org/docs/1.8.1/spec.html#Logical+Types ... View more

It wasn't clear to me from this thread...have you shut down both ambari and the ambari-agent? If not, I would perform the following: Stop ambari. Stop the agent. Start ambari. Start the agent with the command, ambari-agent start --verbose. Then perhaps include the ambari-agent log as an attachment. ... View more

Can you make sure that only one ambari-agent is running: ls -la /var/run/ambari-agent/ There should be one pid file. ... View more

Not sure about the Ranger re-installation, but it looks like the MySQL SQLException is occurring because you have left out the server name in the -cstring option. ... View more

Also, you may want to take a look at the ambari logs to see if there is anything helpful: /var/log/ambari-server/ambari-server.log /var/log/ambari-agent/ambari-agent.log ... View more

Between two processors, you define a relationship. So you probably already established a relationship from the SplitJSon to another processor, and it is configured for the ‘split’ relationship. You can setup another relationship and configure it as the ‘original’ relationship. So between two processors, right click on the relationship and you should see three check boxes. One for original, split, and failure. ... View more