Avoid transport_worker thread in TransportBroadcastAction#98001
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DaveCTurner merged 2 commits intoelastic:mainfrom Jul 27, 2023
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`TransportBroadcastAction` derivatives do work which scales as the number of shards in the cluster, both during coordination and when processing responses. We must therefore not do this work on `transport_worker` threads. Relates elastic#97920
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TransportBroadcastActionderivatives do work which scales as thenumber of shards in the cluster, both during coordination and when
processing responses. We must therefore not do this work on
transport_workerthreads.Relates #97920