> [!HashGrowBucketsReallocate] > <table><tr><td rowspan="4" width="25%"><img src="assets/wl_ipc_hashgrowbucketsreallocate.png"></td><td><b>Wait Category</b></td><td>IPC</td></tr><tr><td><b>Mechanism</b></td><td><code>nodeHash.c</code></td></tr><tr><td><b>Operations</b></td><td><a href="Operations/Join/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"><b>Emergency In-Memory Provisioning Barrier</b>. It occurs when the engine determines that the current hash table density is too high and must double the number of available buckets to restore lookup performance.</td></tr></table>