RavenDB C＃客户端抛出错误为无效的节点标记字符：n

Question

我试图删除RavenDB中的文档，该文档在一台机器上运行3个节点（开发设置）。以下是删除文档的代码。

public bool Remove<T>(string id) where T : new()
{
    bool bResult = false;
    using (var session = _session.OpenSession())
    {
        session.Delete(id);
        session.SaveChanges();
        bResult = true;
    }
    return bResult;
}

但它在session.SaveChanges();线上抛出错误

节点标记字符无效：n ...

堆栈跟踪：

System.ArgumentException: Invalid node tag character: n
   at Raven.Server.Documents.Replication.ChangeVectorParser.ThrowInvalidNodeTag(Char ch) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\Replication\ChangeVectorParser.cs:line 71
   at Raven.Server.Documents.Replication.ChangeVectorParser.ParseNodeTag(String changeVector, Int32 start, Int32 end) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\Replication\ChangeVectorParser.cs:line 52
   at Raven.Server.Documents.Replication.ChangeVectorParser.MergeChangeVector(String changeVector, List`1 entries) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\Replication\ChangeVectorParser.cs:line 186
   at Raven.Server.Utils.ChangeVectorUtils.MergeVectors(String vectorAstring, String vectorBstring) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Utils\ChangeVectorUtils.cs:line 213
   at Raven.Server.Documents.DocumentsStorage.CreateTombstone(DocumentsOperationContext context, Slice lowerId, Int64 documentEtag, CollectionName collectionName, String docChangeVector, Int64 lastModifiedTicks, String changeVector, DocumentFlags flags, NonPersistentDocumentFlags nonPersistentFlags) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\DocumentsStorage.cs:line 1378
   at Raven.Server.Documents.DocumentsStorage.Delete(DocumentsOperationContext context, Slice lowerId, String id, LazyStringValue expectedChangeVector, Nullable`1 lastModifiedTicks, String changeVector, CollectionName collectionName, NonPersistentDocumentFlags nonPersistentFlags, DocumentFlags documentFlags) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\DocumentsStorage.cs:line 1195
   at Raven.Server.Documents.DocumentsStorage.Delete(DocumentsOperationContext context, String id, String expectedChangeVector) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\DocumentsStorage.cs:line 1091
   at Raven.Server.Documents.Handlers.BatchHandler.MergedBatchCommand.ExecuteCmd(DocumentsOperationContext context) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\Handlers\BatchHandler.cs:line 706
   at Raven.Server.Documents.TransactionOperationsMerger.ExecutePendingOperationsInTransaction(List`1 pendingOps, DocumentsOperationContext context, Task previousOperation, DurationMeasurement& meter) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\TransactionOperationsMerger.cs:line 825
   at Raven.Server.Documents.TransactionOperationsMerger.MergeTransactionsOnce() in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\TransactionOperationsMerger.cs:line 500
--- End of stack trace from previous location where exception was thrown ---
   at Raven.Server.Documents.TransactionOperationsMerger.Enqueue(MergedTransactionCommand cmd) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\TransactionOperationsMerger.cs:line 124
   at Raven.Server.Documents.Handlers.BatchHandler.BulkDocs() in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Documents\Handlers\BatchHandler.cs:line 96
   at Raven.Server.Routing.RequestRouter.HandlePath(RequestHandlerContext reqCtx) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\Routing\RequestRouter.cs:line 124
   at Raven.Server.RavenServerStartup.RequestHandler(HttpContext context) in C:\Builds\RavenDB-Stable-4.1\src\Raven.Server\RavenServerStartup.cs:line 172

Answer 1

我昨天遇到了同样的错误。我在不同的机器上恢复了数据库，在那里我安装了全新的RavenDB和（懒惰）命名的新实例节点“A”。当更改向量和实例标记名称不匹配时，RavenDB当前无法删除文档。

node-tag-mismatch

它看起来像代码中的一个诚实错误而不是故意行为..但它只是我的猜测，因为我没有在4.1文档中找到任何有关此行为的内容。

解决方案（如果您确认存在不匹配）：

您可以尝试将新节点添加到群集，其名称与锁定文档的更改向量匹配。

在我的情况下，我无法将独立的RavenDB配置为具有超过4个字符的节点标记（在Docker上没有问题）......然后可能更难将数据库变为一致状态。

或者尝试导出和导入数据。它修复了问题，因为更改向量已更新并匹配新节点标记。