Hi Team,   I am facing a weird issue, I am connecting to impala from pypyodbc library and not able to execute the insert queries. The moment I execute the "cursor.execute("insert into ........")" it executes successfully with no error/exception but when I checked in coordinator the query is getting cancelled with no reason,   Specifications: Python = 3.7.3 pypyodbc = 1.3.4 impala = 3.2.0-cdh6.3.3     I0930 01:35:20.687757 552509 coordinator.cc:361] 3f46242d529596a8:c9dd8a3500000000] starting execution on 1 backends for query_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.688199 105383 impala-internal-service.cc:50] 3f46242d529596a8:c9dd8a3500000000] ExecQueryFInstances(): query_id=3f46242d529596a8:c9dd8a3500000000 coord=some_ip.mastercard.int:port #instances=1 I0930 01:35:20.688211 549896 impala-hs2-server.cc:705] CloseOperation(): query_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.688225 549896 impala-server.cc:1164] UnregisterQuery(): query_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.688230 549896 impala-server.cc:1271] Cancel(): query_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.688603 552509 coordinator.cc:375] 3f46242d529596a8:c9dd8a3500000000] started execution on 1 backends for query_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.688632 552512 query-state.cc:642] 3f46242d529596a8:c9dd8a3500000000] Executing instance. instance_id=3f46242d529596a8:c9dd8a3500000000 fragment_idx=0 per_fragment_instance_idx=0 coord_state_idx=0 #in-flight=1 I0930 01:35:20.689502 552509 client-request-state.cc:545] 3f46242d529596a8:c9dd8a3500000000] Cancelled right after starting the coordinator query id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.689520 552509 coordinator.cc:488] 3f46242d529596a8:c9dd8a3500000000] ExecState: query id=3f46242d529596a8:c9dd8a3500000000 execution cancelled I0930 01:35:20.689545 552509 coordinator-backend-state.cc:445] 3f46242d529596a8:c9dd8a3500000000] Sending CancelQueryFInstances rpc for query_id=3f46242d529596a8:c9dd8a3500000000 backend=10.158.176.127:27000 I0930 01:35:20.689965 98671 control-service.cc:169] CancelQueryFInstances(): query_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.689976 98671 query-exec-mgr.cc:97] QueryState: query_id=3f46242d529596a8:c9dd8a3500000000 refcnt=4 I0930 01:35:20.689981 98671 query-state.cc:667] Cancel: query_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.689988 98671 krpc-data-stream-mgr.cc:326] cancelling all streams for fragment_instance_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.690135 552509 coordinator.cc:691] 3f46242d529596a8:c9dd8a3500000000] CancelBackends() query_id=3f46242d529596a8:c9dd8a3500000000, tried to cancel 1 backends I0930 01:35:20.690142 552509 coordinator.cc:863] 3f46242d529596a8:c9dd8a3500000000] Release admission control resources for query_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.847793 552512 query-state.cc:650] 3f46242d529596a8:c9dd8a3500000000] Instance completed. instance_id=3f46242d529596a8:c9dd8a3500000000 #in-flight=0 status=OK I0930 01:35:20.847918 552511 query-state.cc:290] 3f46242d529596a8:c9dd8a3500000000] UpdateBackendExecState(): last report for 3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.848443 98671 control-service.cc:126] ReportExecStatus(): Received report for unknown query ID (probably closed or cancelled): 3f46242d529596a8:c9dd8a3500000000 remote host=some_ip:port I0930 01:35:20.848542 552511 query-state.cc:449] 3f46242d529596a8:c9dd8a3500000000] Cancelling fragment instances as directed by the coordinator. Returned status: ReportExecStatus(): Received report for unknown query ID (probably closed or cancelled): 3f46242d529596a8:c9dd8a3500000000 remote host=some_ip:port I0930 01:35:20.848554 552511 query-state.cc:667] 3f46242d529596a8:c9dd8a3500000000] Cancel: query_id=3f46242d529596a8:c9dd8a3500000000 I0930 01:35:20.848667 552511 query-exec-mgr.cc:184] 3f46242d529596a8:c9dd8a3500000000] ReleaseQueryState(): deleted query_id=3f46242d529596a8:c9dd8a3500000000  ... View more