OptionSEGMENT_TO_HOST_MAPPING_TOPOLOGY_CHANGE_SETTLING_TIME_SECONDS
Description Number of seconds for the settling period upon a cluster topology change (add/remove a node). To use this feature, set the UseInMemorySegmentOwnerHosts feature flag.
Introduced Version1.215.0
Default300
Maximum3,600

Upon a topology change, such as adding a node or removing a node, the cluster will wait for the number of seconds specified by this environment variable before moving segments around the cluster to accommodate the new topology on the cluster.