in server/src/jetbrains/buildServer/serverSide/priority/BuildQueuePriorityOrdering.java [246:254]
private long getDurationSeconds(SQueuedBuild item) {
BuildEstimates estimates = item.getBuildEstimates();
if (estimates == null) return DEFAULT_DURATION;
TimeInterval timeInterval = estimates.getTimeInterval();
if (timeInterval == null) return DEFAULT_DURATION;
Long duration = timeInterval.getDurationSeconds();
if (duration == null) return DEFAULT_DURATION;
return duration == 0 ? 1 : duration;
}