Jenkins jobs are hanging in between suddenly and the job is getting stuck. It is neither failing nor moving forward. We have to abort the job and then rebuild it. Then the job is moving forward. I verified that the jenkins is up & running.

I am seeing some thread dump from the url : "http://hostname:8080/threadDump"..

Attached is the threaddump at the time jenkins job hung.

Please review and help on how to fix this issue as we are now running into this issue very frequently.