NiFi crashes when I try to turn it on ( org.apache.nifi.web.NiFiCoreException : unable to start Flow controller)

[#1]

When I try to turn on the NiFi it crashes with the below error. I would be grateful if someone can help me!

[#2]

@Emmanouil Petsanis

My First thought would be to try increasing the number of available file handles for the user running you NiFi in the limits.conf file on your server.

I would suggest setting a value of at least:

* hard nofile 50000

* hard noproc 50000

* soft noproc 50000

* soft nofile 50000

After making the above change, see if you can start NiFi.

Thanks,

Matt

[#3]

Thank you @Matt Clarke for your instant reply but it still doesn't work. I forgot to mention that I am running it on Hortonworks sandbox and 3 days ago it was running perfectly!

[#4]

@Emmanouil Petsanis

Was there some error or condition that occurred prior to this issue (Out of disk space issues, repo corruption, etc...)?

Do you run into the same issue if you switch to a newer release version? The latest HDF release is HDF 2.1.2

http://docs.hortonworks.com/HDPDocuments/HDF2/HDF-2.1.2/index.html

Thanks,

Matt