If a cluster is already formed (perhaps due to another cache instance being started, such as a replicated one) and subsequently a distributed cache is created and started, first on a non-coordinator node, the startup sequence will hang until the cache is also started on the coordinator.

E.g.,

1. C1 (coord) starts replicated cache
2. C2 starts replicated cache
3. C2 starts distributed cache
4. C1 starts distributed cache

Step 3 will hang until step 4 completes. So unless these happen in different threads - on different servers - this rehash will hang.