Inserting SpannerParameter.CommitTimestamp into Timestamp column with allow_commit_timestamp fails with exception

Environment details

• OS: Windows 8.1
• .NET version: 4.6.2
• Package name and version: Google.Cloud.Spanner.Data v2.0.0 beta 8

Steps to reproduce

I have the following table: (this is all test code, hence the lame names)

CREATE TABLE TypesTab (
        ID INT64 NOT NULL,
        NAME STRING(40),
        DESCRIPTION STRING(MAX),
        FLOATCOL FLOAT64,
        IS_ACTIVE BOOL,
        BYTESCOL BYTES(40),
        IMAGECOL BYTES(MAX),
        TIMESTAMPCOL_AUTO TIMESTAMP OPTIONS (allow_commit_timestamp = true),
        TIMESTAMPCOL TIMESTAMP,
        DATECOL DATE,
) PRIMARY KEY(ID)

I’m trying to insert the commit timestamp into the TIMESTAMPCOL_AUTO column. For this repro I use this code:

private static void InsertTest()
{
	using(var con = new SpannerConnection(CreateConnectionString()))
	{
		Console.WriteLine("Opening connection");
		con.Open();
		Console.WriteLine("Connection opened");

		var cmd = con.CreateCommand();
		cmd.CommandText = @"INSERT INTO `TypesTab` (`ID`, `TIMESTAMPCOL_AUTO`) VALUES (@p1, @p2)";
		cmd.Parameters.Add(new SpannerParameter("@p1", SpannerDbType.Int64, 1));
		cmd.Parameters.Add(new SpannerParameter("@p2", SpannerDbType.Timestamp, SpannerParameter.CommitTimestamp));
		var result = cmd.ExecuteNonQuery();
		Console.WriteLine("Number of rows affected: {0}", result);
	}
}


private static string CreateConnectionString()
{
	return $"Data Source=projects/{ProjectID}/instances/{InstanceID}/databases/{DatabaseID}";
}

This results in the following output/ exception:

Opening connection
Connection opened

Unhandled Exception: Google.Cloud.Spanner.Data.SpannerException: An invalid argument was sent to Spanner. ---> Grpc.Core.RpcException: Status(StatusCode=InvalidArgument, Detail="Value has type INT64 which cannot be inserted into column TIMESTAMPCOL_AUTO, which
has type TIMESTAMP [at 1:65]\nINSERT INTO `TypesTab` (`ID`, `TIMESTAMPCOL_AUTO`) VALUES (@p1, @p2)\n                                                                ^")
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Grpc.Core.Internal.ClientResponseStream`2.<MoveNext>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Grpc.Gcp.GcpClientResponseStream`2.<MoveNext>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.V1.Internal.ExecuteHelper.<WithSessionExpiryChecking>d__0`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.V1.SqlResultStream.<ComputeNextAsync>d__21.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.V1.SqlResultStream.<MoveNext>d__20.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.V1.ReliableStreamReader.<MoveNextAsync>d__25.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.V1.ReliableStreamReader.<EnsureInitializedAsync>d__24.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.V1.ReliableStreamReader.<NextAsync>d__23.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.Data.SpannerTransaction.<>c__DisplayClass36_0.<<Google-Cloud-Spanner-Data-ISpannerTransaction-ExecuteDmlAsync>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.Data.ExecuteHelper.<WithErrorTranslationAndProfiling>d__2`1.MoveNext()
   --- End of inner exception stack trace ---
   at Google.Cloud.Spanner.Data.ExecuteHelper.<WithErrorTranslationAndProfiling>d__2`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.Data.EphemeralTransaction.<>c__DisplayClass3_0.<<ExecuteDmlAsync>g__Impl|0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.Data.ExecuteHelper.<WithErrorTranslationAndProfiling>d__2`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Google.Cloud.Spanner.Data.SpannerCommand.ExecutableCommand.<ExecuteDmlAsync>d__28.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Google.Api.Gax.TaskExtensions.WaitWithUnwrappedExceptions(Task task)
   at Google.Cloud.Spanner.Data.SpannerCommand.ExecuteNonQuery()
   at SpannerTest.Program.InsertTest() in ************\SpannerTest\Program.cs:line 64
   at SpannerTest.Program.Main(String[] args) in ************\SpannerTest\Program.cs:line 17

Process finished with exit code -532.462.766.

I think I followed everything in the docs. The INT64 remark is weird, I don’t see what’s wrong here.

TIA.

[jskeet]

Right. I can raise the general Cloud Spanner docs internally - but I can change the .NET documentation more directly, so I’ll do that to start with 😃

[jskeet]

The good news is that I can reproduce it. Now to try to work out why it’s failing…