Unexpected NoHostAvailable error

[sylwiaszunejko]

Scylla issues:

• [Bug]: raft instance stopped due to bad_alloc scylladb#23923
• limits_test.TestLimits.test_request_too_large[SSL] failed with NoHostAvailable scylladb#27300
• [scylla-2025.2][aarch64, debug] cluster/test_tablets_merge failed with cassandra.cluster.NoHostAvailable: ('Unable to complete the operation against any hosts', {<Host: 127.23.229.13:9042 datacenter1>: ConnectionShutdown('Connection to 127.23.229.13:9042 was closed')}) scylladb#27633
• Scylla reported: NoHostAvailable: ('Unable to complete the operation against any hosts') but command been completed scylladb#25599
• Driver reported: "NoHostAvailable: ('Unable to complete the operation against any hosts')" but operation completed scylladb#26181