Do someone now what are the different possible values of the filed "onunknownstatejob" in "executiontask" table and how/where can we change this value? The only value I have for the moment is "WAIT" for all tasks.
I found the answer. In fact this field correspond to "On unavailable JobServer" in TAC job conductor. It can have several values like KILL_TASK, RECOVER_TASK, RESTART_TASK and WAIT.