If the ESFClient suddenly exits, the AUTH event stalls

I have an ESF Client process, and this process handles AUTH event in one multi-thread, at this time, if the Client process exits abnormally, will the AUTH event not be handled, thus causing the system to freeze

No. When a ES client crashes, auth events are approved automatically unti your client is up and active again. While an ES client can cause interface delays and, in some cases, even kernel panics, the broad goal of the API is to minimize theses issues, even if the ES client crashes.

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Kevin Elliott
DTS Engineer, CoreOS/Hardware