find out the list of tickets where a new comment is added by a specific user in a given timeframe

[naval tripathi]

find out the list of tickets where a new comment is added by a specific user in a given timeframe

known values - project name, user list and timeframe

[Jason Moerbe]

Take a look at issueFunction for JQL.  https://jamieechlin.atlassian.net/wiki/display/GRV/Scripted+JQL+Functions#ScriptedJQLFunctions-commented%28commentquery%29

Example:

Find Smithville project issues commented by jbloggs within the last 4 weeks:

project = "Smithville" AND issueFunction in commented("after -4w by jbloggs")