DelayedEvent

An event generated whenever a resource limitation or transient error delays execution of a pipeline that was otherwise ready to run.

JSON representation 
{
  "cause": string,
  "metrics": [
    string
  ]
}
Fields
cause

string

A textual description of the cause of the delay. The string can change without notice because it is often generated by another service (such as Compute Engine).
metrics[]

string

If the delay was caused by a resource shortage, this field lists the Compute Engine metrics that are preventing this operation from running (for example, CPUS or INSTANCES). If the particular metric is not known, a single UNKNOWN metric will be present.