> [!ParallelHashJoin] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_lwlock_parallel_hash_join.png"></td><td><b>Wait Category</b></td><td>LWLock</td></tr><tr><td><b>Mechanism</b></td><td><code>ParallelHashJoinLock</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Joins/HashJoin">HashJoin</a></td></tr><tr><td><b>Resources</b></td><td><a href="Resources/RAM">Memory</a>, <a href="Resources/CPU">CPU</a></td></tr><tr><td colspan="3">Contention on <b>Shared Hash Table</b>. This lock coordinates access to the shared hash table used by multiple parallel workers during the build and probe phases of a parallel hash join.</td></tr></table>