E2426
Google PubSub target — State write failed
A write to the producer’s state file failed because the volume that holds it is full, gone,
unreadable, or has been remounted read-only. The transaction was rolled back; the message says
whether the batch had already been published, which decides whether anything needs redelivering.
Fix — free space on the volume that holds the state file, or check its health, and restart.
The state is the producer’s sequencer: it must live on a persistent volume sized for the outbox
backlog, not on ephemeral container storage.