Have you looked at the Max Threads settings under the main NiFi Controller Settings menu? It doesn't allow you to strictly limit the utilisation of the flow, but it provides a limitation on the max concurrency at a global level. ... View more

Hi @Pratik Ghatak This looks like what happens when you try to connect NiFi to an old fork of Hive like the one in CDH, I have an article about it here: https://community.hortonworks.com/articles/93771/connecting-nifi-to-cdh-hive.html There's an excellent comment from @Rudolf Schimmel on a workaround at the bottom of that post if you are in the same situation, but give it a read and let me know if you need help with an alternative solution. ... View more

One of your configuration parameters for Superset is missing, it looks like it's one of the port statements. Check that you've set the database port for MySQL and the HTTP port for Superset. ... View more

I'm pretty sure colons in filenames are considered bad practice - try removing that. The dot could be because it's failing to complete the writing of the file, so it's generating the dot file for writing but can't complete the action. Just a guess without looking at your logs. ... View more

@yjiang Have you installed NiFi on the same server as Superset? They have a default port clash on 9088 - I suggest you search in the NiFi configs for 9088 and change it to 9089 (9089 is free in a default install). ... View more