enenuki commented on issue #9992:
URL: https://github.com/apache/druid/issues/9992#issuecomment-640457378


   We are using druid to store syslog records in it. Later on we run those 
records against some set of rules to check for existence of some incidents. 
When incident is detected we need ability to refer to a set of related records 
and we need a record ID for this. Using timestamp, hashcode and/or UUID 
generator function would be beneficial for this. I realize that this may not be 
a best use case for druid as it is analytics database.
   Regardless to our use case, having function for system time gives 
"ingestion" timestamp which seems useful as many realtime/streaming frameworks 
have this option. For example, ability to set __time field to be "system 
(ingestion) time" instead some value parsed from input seems logical.
   
   Regards,
   Nenad


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