Have a strange issue where we have around 1500 active tasks on our 5 node 5.2 ES cluster. They are all on the same node (current master, and endpoint for Kibana/Monitoring) and go back for days.
Any ideas what these could be? I tried to do a bulk cancel on them to no avail.
indices:admin/get I_eYf5eiTX-uwkuoO2huEA:26400939 - transport 09:58:17
I'm not sure if it's causing an issue, but it's not happening on our 2.3 cluster.
Any help greatly appreciated!