what does this error mean? what can we do to speed up the 'loading of the database'. This is when we do a first request to an ion function and are trying to open a connection.

{
  "Type": "clojure.lang.ExceptionInfo",
  "Message": "Loading database",
  "Data": {
    "CognitectAnomaliesCategory": "CognitectAnomaliesUnavailable",
    "CognitectAnomaliesMessage": "Loading database"
  },
  "At": [
    "clojure.core$ex_info",
    "invokeStatic",
    "core.clj",
    4739
  ]
}

@stijn This indicates that you’ve hit a node that hasn’t yet loaded the requested database. You should only see this on ‘startup’ - are you getting the error in an ongoing system?

no, when deploying a new version of the ions

but it takes quite a while (couple of minutes)

are you on production or solo? also, how big is the database?

this is a production topology, but with the desired instance count set to 1 (staging environment, we don't want HA)

i’m surprised it takes minutes; i would expect order of 15 seconds or so

the error persisted for 11 minutes. i'll check the database size.

Storage size (in bytes) 259.36 MB Item count 242,223

in the dynamo table

can you get the db-stats from a REPL for that database? (https://docs.datomic.com/client-api/datomic.client.api.html#var-db-stats)

Hi, I'm looking for an example of the invocation syntax for using a classpath functions within a transaction - can anyone point me at one? (or have I misunderstood what they can do?) (on-prem)

Can anyone give advice on debugging a Datomic Ion CodeDeploy failure (Solo topology)? It times out on the ValidateService step with nothing helpful showing up in the CloudWatch logs at all.

I think what's happening is that for whatever reason the app is starting really slow, so even though it's working, CodeDeploy gives up and rolls back. Is there a way to increase the timeout on that?

@jaret I'm unable to deploy to my Solo topology. CodeDeploy succeeds all the way to the ApplicationStart event almost immediately, then hangs on ValidateService until it times out (2 minutes). Then, at least 30 seconds later, I start seeing CloudWatch logs related to Datomic setting up the system (eg ClusterNodeCreate, CreateSoloComponents, and Registered solo node), followed by logs from my app indicating successful startup. I can't hit the new version though due to the CodeDeploy rolling back.