`unavailable.executor.ipc_transport`

The IPC connection to the store owner failed while a command was in flight.

Reopen the database (the owner may have exited or restarted) and, for a write, confirm whether it applied before retrying.

class: unavailable
retry: unknown - Outcome unknown; inspect the database state before retrying.
commit outcome: maybe_committed - The commit may or may not have applied; verify with a read before retrying.