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  1. C# Driver
  2. CSHARP-1607

Incorrect serialization of large arrays

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • 2.2.4
    • Affects Version/s: 2.0
    • Component/s: BSON
    • Labels:

      Serialize an array with more than 100k elements:

      using System.IO;
using MongoDB.Bson.IO;

public class Bug {

    public static void Main() {

        var stream = File.OpenWrite("foo.bson");
        var writer = new BsonBinaryWriter(stream);

        writer.WriteStartDocument();
        writer.WriteName("a");
        writer.WriteStartArray();
        for (int i=0; i<110000; i++)
            writer.WriteInt32(17);
        writer.WriteEndArray();
        writer.WriteEndDocument();
   }
}

      Dump the resulting bson; all the array elements past the first 100k have "1" as a field name.

      4: a: DOC len=11aeef(1158895) EOO=11aef5 parent=0
b: 0: int32 11 00 00 00
12: 1: int32 11 00 00 00
19: 2: int32 11 00 00 00
20: 3: int32 11 00 00 00
27: 4: int32 11 00 00 00
2e: 5: int32 11 00 00 00
...
109d59: 99996: int32 11 00 00 00
109d64: 99997: int32 11 00 00 00
109d6f: 99998: int32 11 00 00 00
109d7a: 99999: int32 11 00 00 00
109d85: 1: int32 11 00 00 00
109d8c: 1: int32 11 00 00 00
109d93: 1: int32 11 00 00 00
109d9a: 1: int32 11 00 00 00
...
11aed2: 1: int32 11 00 00 00
11aed9: 1: int32 11 00 00 00
11aee0: 1: int32 11 00 00 00
11aee7: 1: int32 11 00 00 00
11aeee: 1: int32 11 00 00 00
11aef5: EOO
11aef6: EOO

            Assignee:
            robert@mongodb.com Robert Stam
            Reporter:
            bruce.lucas@mongodb.com Bruce Lucas (Inactive)
            Votes:
            1 Vote for this issue
            Watchers:
            6 Start watching this issue

              Created:
              Updated:
              Resolved: