When ever I run some query my search is getting auto cancelled. My search head is a single search heard and searching on a indexer cluster. What could be the reason. We face this after the recent upgrade to 7.3
In our case the user was opening many tab and executing many searches that was causing the searches to auto canceling. After educating the user the issue is resolved.
@msplunk33 Have you tried looking into the splunk internal logs for any errors or warnings that might be logging for this.
index=_internal sourcetype=splunkd log_level!=INFO *<your splunk login userid>*