Ansible Hangs at the end of a Host list

[eyal gershon]

Hey Everyone,

I am running ansible  version 1.8.4.

Running the same task on multiple Hosts list - 

---
  - hosts: all
    gather_facts: no
    tasks:
    - name: Stopping OSSEC
      service:
        name: ossec-hids
        state: stopped


  - hosts: all
    gather_facts: no
    tasks:
    - name: Deleteing File
      shell:  rm -f /var/ossec/queue/rids/*

From time to time the first task hangs on the last server in the Host list (the host list is dynamic and is being generated by a different Playbook) and does not continue to the next task.

Is there a way to debug this?

Why does it hangs from time to time?