Analytics: minor fix to timestamp assignment in Job Aggregator

analytics/operators/aggregator/JobAggregatorOperator.cpp

@@ -38,6 +38,10 @@ JobAggregatorOperator::~JobAggregatorOperator() {}
 
 void JobAggregatorOperator::compute(U_Ptr unit, qeJobData& jobData) {
     uint64_t now = getTimestamp() - _goBack;
+    // Too early to fetch job data
+    if(now < jobData.startTime) {
+        return;
+    }
     // Making sure that the aggregation boundaries do not go past the job start/end time
     uint64_t jobEnd   = jobData.endTime!=0 && now > jobData.endTime ? jobData.endTime : now;
     uint64_t jobStart = jobEnd-_window < jobData.startTime ? jobData.startTime : jobEnd-_window;