Heres the default values txn-abort-after=5m; max-retries=-1;max-pending-queries=10000" of all clusters. Based on this, any transaction that fails will have at least one retry(liveloader that will retry). If that retry fails again it will abort if it stay in the pending transaction after 5 minutes.
Liveloader is a program. If it breaks/panics it stops completely. But the transactions that went through will pass in that steps I mentioned above.