| READY |
| Query has been processed and is ready for execution. |
| COST_RECV/RECEIVED |
| Node has received either the cost estimate or plan query. |
| COST_RUNNING/EXECUTING |
| Node is running either the cost estimate or plan query. |
| COST_COMPLETE/COMPLETE |
| Node has completed the cost estimate or plan query query. |
| COST_FAILED/FAILED |
| Cost estimate/plan query failed at this node. |
| LOADING |
| Node is uploading data from an earlier node. |
| PASSED |
| Node has passed the plan to the next node and is awaiting results. |