The .NET sample gets stuck after running for a while and becomes unresponsive.

[Smartisa]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [ x] bug report -> please search issues before submitting
- [ ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

Use the CsvHelper tool to read a 12G CSV file.
Generate an instance of "GremlinEdge" and pass it to graphBulkExecutor.BulkImportAsync().

Any log messages given by the failure

Without any feedback, after running for a while, the program gets stuck.

Expected/desired behavior

I hope it can run without getting stuck.

Mention any other details that might be useful

Here is my code:

            var gremlinElements = new List<IGremlinElement>();

            List<GremlinEdge> gremlinEdges = new List<GremlinEdge>();
            var config = new CsvConfiguration(CultureInfo.InvariantCulture)
            {
                HasHeaderRecord = false,
            };
            using (var reader = new StreamReader(filePath))
            using (var csv = new CsvReader(reader, config))
            {
                var relations = csv.GetRecords<Relation>();
                foreach (var relation in relations)
                {
                    cur_e++;
                    GremlinEdge e = new GremlinEdge(
                        "e" + cur_e,
                        relation.Label,
                        relation.Src_id,
                        relation.Tar_id,
                        "Person",
                        "Person",
                        relation.Src_id,
                        relation.Tar_id);

                    e.AddProperty("type", relation.type);

                    gremlinEdges.Add(e);
                    if(cur_e%100000==0)
                    {
                        Console.WriteLine("******"+cur_e.ToString());
                        gremlinElements.AddRange(gremlinEdges);
                        bulkOperationResponse = await graphBulkExecutor.BulkImportAsync(
                            gremlinElements: gremlinElements,
                            enableUpsert: true);
                        gremlinEdges=new List<GremlinEdge>();
                    }
                }
            }