microsoft / microsoft/psi

Error: Invalid Index Entry

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C#
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Description

Hello, I am using Psi Store Importer from 0.19.100.1-beta. For some Psi Stores, I encounter the following error. The Psi Store was captured with the same psi version. In its error message, I do not understand the meaning of Invalid index entry (extent: 10, position: 224618232, current: 10).

Could you help explain why this error might occur and what this error message means? Is there a way to fix the store? How can I check from Psi Studio if the store was closed properly by the writer?

Our Psi Store has many streams, so I am not sure which data type it is handling. Regarding the error, would knowing the stream name and data type be useful in identifying the problem?

fail: Microsoft.Extensions.Hosting.Internal.Host[9]
      BackgroundService failed
      System.AggregateException: Pipeline 'default' was terminated because of one or more unexpected errors (Invalid index entry (extent: 10, position: 224618232, current: 10))
       ---> System.ArgumentException: Invalid index entry (extent: 10, position: 224618232, current: 10)
         at Microsoft.Psi.Data.Importer.StreamImporter.Next(Boolean moreDataPromised, Envelope env)
         at Microsoft.Psi.Receiver`1.DeliverNext()
         at Microsoft.Psi.Scheduling.Scheduler.ExecuteAndRelease(SynchronizationLock synchronizationObject, Action action, SchedulerContext context)
         --- End of inner exception stack trace ---
         at Microsoft.Psi.Pipeline.ThrowIfError()
         at Microsoft.Psi.Pipeline.Run(ReplayDescriptor descriptor, IProgress`1 progress)
         at Microsoft.Psi.Pipeline.Run(TimeInterval replayInterval, Boolean enforceReplayClock, IProgress`1 progress)
         at DataExporter.ExporterService.ExecuteAsync(CancellationToken stoppingToken) in C:\proj\DataExporter\ExporterService.cs:line 69
         at Microsoft.Extensions.Hosting.Internal.Host.TryExecuteBackgroundServiceAsync(BackgroundService backgroundService)

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with Microsoft.Psi.Data.Importer.StreamImporter.Next in the stack trace and the import call at ExporterService.cs line 69. Review the Psi Store importer and Psi Studio references mentioned in the report. Done means documenting the meaning and likely causes of the invalid index entry, how to check whether a store was closed properly, and any supported recovery steps.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
stream-processing
Issue type
Documentation
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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