> [!ParallelFinish] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_ipc_parallelfinish.png"></td><td><b>Wait Category</b></td><td>IPC</td></tr><tr><td><b>Mechanism</b></td><td><code>WaitForParallelWorkersToFinish</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Table/SeqScan">SeqScan</a>, <a href="Operations/ResultSet/HashJoin">HashJoin</a></td></tr><tr><td><b>Resources</b></td><td><a href="Resources/CPU">CPU</a>, <a href="Resources/RAM">Memory</a></td></tr><tr><td colspan="3">This wait event represents the <b>Cleanup Overhead</b> of parallel execution. After all rows have been gathered, the leader backend cannot return the final result set until every worker has safely detached from shared memory and successfully terminated.</td></tr></table>