How to remove the blank lines in Nifi

[#1]

I'm currently trying to remove the blank line after discarding the lines in Nifi

Removing those lines in Nifi {"eventType":"delete","ServerSerial":"0","ServerName":"","deletedat":"2018-08-24 17:56:34.944"} Since the serial number is 0 and empty servername . After removing there will be a blank space created in the final output file I want to replace the blanks space

"eventType":"delete","ServerSerial":"1556562030","ServerName":"XYZ_U_O","deletedat":"2018-08-24 17:56:39.974"}

{"eventType":"delete","ServerSerial":"0","ServerName":"","deletedat":"2018-08-24 17:56:34.944"}

{"eventType":"delete","ServerSerial":"0","ServerName":"","deletedat":"2018-08-24 17:56:34.944"}

So I'm currently using ReplaceText to search for the value :

{"eventType":"delete","ServerSerial":"0","ServerName":""[^}]+},? 

and replacing with empty spaces . It failed to remove the blank lines

Replaced with ^[ \t]*$\r?\n --> Failed to remove .

Replaced with \r\n --> Failed to remove .

Replace value is not considered the regex value . What shall I do . How can i replace blank lines after removing the lines based on the Search value.

[#2]

@Raj ji

Check out this solution here:

https://community.hortonworks.com/questions/147226/replacetextprocessor-remove-blank-lines.html

If this answer is helpful please choose ACCEPT to mark the question resolved.