| Name | Type | Package | Detail |
| CachedBlockQueue | Class | blockfile.cache | Detail |
| CompactionQueue | Class | accumulo.tserver | Detail |
| DistributedWorkQueue | Class | server.zookeeper | Detail |
| SelectiveQueueing | Class | randomwalk.bulk | Detail |
| ZooQueueLock | Class | server.zookeeper | Detail |
| ZooQueueLock | Class | fate.zookeeper | Detail |
