.NET Runtime - Unhandled Exception

EventStoreDB
1

Event store version 3.2.0.0 running under Windows.

Our Event Store stopped running, and in the Windows Event Log, we had the following message.

Application: EventStore.ClusterNode.exe

Framework Version: v4.0.30319

Description: The process was terminated due to an unhandled exception.

Exception Info: exception code 80000003, exception address 000007FA80AC6BFA

Stack:

at EventStore.Projections.Core.v8.Js1.CompilePrelude(System.String, System.String, LoadModuleDelegate, EnterCancellableRegionDelegate, ExitCancellableRegionDelegate, LogDelegate)

at EventStore.Projections.Core.v8.Js1.CompilePrelude(System.String, System.String, LoadModuleDelegate, EnterCancellableRegionDelegate, ExitCancellableRegionDelegate, LogDelegate)

at EventStore.Projections.Core.v8.PreludeScript.CompileScript(System.String, System.String)

at EventStore.Projections.Core.v8.PreludeScript…ctor(System.String, System.String, System.Func2<System.String,System.Tuple2<System.String,System.String>>, System.Action2<Int32,System.Action>, System.Action2<System.String,System.Object[]>)

at EventStore.Projections.Core.Services.v8.V8ProjectionStateHandler…ctor(System.String, System.String, System.Func2<System.String,System.Tuple2<System.String,System.String>>, System.Action2<System.String,System.Object[]>, System.Action2<Int32,System.Action>)

at EventStore.Projections.Core.Services.Management.ProjectionStateHandlerFactory.Create(System.String, System.String, System.Action2<Int32,System.Action>, System.Action2<System.String,System.Object[]>)

at EventStore.Projections.Core.Services.Processing.ProjectionCoreService.CreateStateHandler(EventStore.Projections.Core.Services.ISingletonTimeoutScheduler, EventStore.Common.Log.ILogger, System.String, System.String)

at EventStore.Projections.Core.Services.Processing.ProjectionCoreService.Handle(CreateAndPrepare)

at EventStore.Core.Bus.MessageHandler`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].TryHandle(EventStore.Core.Messaging.Message)

at EventStore.Core.Bus.InMemoryBus.Publish(EventStore.Core.Messaging.Message)

at EventStore.Core.Bus.QueuedHandlerMRES.ReadFromQueue(System.Object)

at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)

at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)

at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)

at System.Threading.ThreadHelper.ThreadStart(System.Object)

Anyone any idea what happened?

2

You are running with projections enabled…
Do you have any logs from ES around the time of the crash?

3

Can you tell a bit more about what might have been going on?

4

We had two projections running.
There was traffic coming through the Event Store, but nothing more than a few events per minute.

I have attached the log file.

The server we are running this on is very low specification, and the memory usage is always running >95%. Not sure whether thats relevant or not.

if you need anything else, just let me know.

127.0.0.1-2113-cluster-node.log (106 KB)

5

"The server we are running this on is very low specification, and the
memory usage is always running >95%. Not sure whether thats relevant
or not."

Actually this may be. It seems the error occurred when compiling JavaScript.

6

Even so we should probably handle this better in EventStore.Projections.Core.v8.Js1.CompilePrelude in JS1 - almost certainly related to memory usage though.

7

Yes we should handle it better its a bit bizarre that its coming back
as a 800000003 though. This is normally a debugger interrupt in my
experience.