[IGNITE-18170] Deadlock in TableManager#updateAssignmentInternal() - ASF JIRA

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Currently, TableManager#updateAssignmentsInternal is fully synchronous. The scenario is as follows:

updateAssignmentsInternal starts a RAFT group for a partition
FSMCallerImpl finds out that its applied index is below the group committed index, so it starts to apply the missing log entries in its init() method (this is still done synchronously)
While doing so, it invokes PartitionListener, which tries to execute an insert
To make an insert, a PK is needed, so it the insertion code tries to obtain a PK from its future like this: pkFuture.join()
That future is completed from IndexManager#createIndexLocally(), which is invoked by ConfigurationNotifier later than updateassignmentsInternal in the same thread
As a result, the PK future cannot be completed before the sync updateAssignmentsInternal finishes its job and returns, and it cannot finish its job before the PK future is completed