[IGNITE-5786] .NET: Transaction fails with multiple write-through caches

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.6
• Fix Version/s: 2.3
• Component/s: platforms
• Labels: .NET
• Assignee: Pavel Tupitsyn
• Reporter: Pavel Tupitsyn
• Created: 19/Jul/17 16:48
• Updated: 28/Aug/17 16:40
• Resolved: 21/Jul/17 14:07

Description

To reproduce: create two caches with WriteThrough=true and some CacheStore (implementation can be empty).

Attempt to update both caches within a transaction:

            using (var tx = ignite.GetTransactions().TxStart())
            {
                cache1.Put(1, 1);
                cache2.Put(1, 1);

                tx.Commit();
            }

Exception occurs:

(err) Failed to notify listener: o.a.i.i.processors.cache.distributed.near.GridNearTxLocal$[e-mail]: PlatformNativeException [cause=System.InvalidOperationException [idHash=1909546776, hash=1265661973, ClassName=System.InvalidOperationException, Data=null, ExceptionMethod=8
Get
Apache.Ignite.Core, Version=2.1.0.19388, Culture=neutral, PublicKeyToken=a487a7ff0b2aaa4a
Apache.Ignite.Core.Impl.Handle.HandleRegistry
T Get[T](Int64, Boolean), HelpURL=null, HResult=-2146233079, InnerException=null, Message=Resource handle has been released (is Ignite stopping?)., RemoteStackIndex=0, RemoteStackTraceString=null, Source=Apache.Ignite.Core, StackTraceString=   at Apache.Ignite.Core.Impl.Handle.HandleRegistry.Get[T](Int64 id, Boolean throwOnAbsent) in C:\w\incubator-ignite\modules\platforms\dotnet\Apache.Ignite.Core\Impl\Handle\HandleRegistry.cs:line 262
   at Apache.Ignite.Core.Impl.Cache.Store.CacheStoreInternal`2.Invoke(IBinaryStream stream, Ignite grid) in C:\w\incubator-ignite\modules\platforms\dotnet\Apache.Ignite.Core\Impl\Cache\Store\CacheStoreInternal.cs:line 112
   at Apache.Ignite.Core.Impl.Cache.Store.CacheStore.Invoke(PlatformMemoryStream stream, Ignite grid) in C:\w\incubator-ignite\modules\platforms\dotnet\Apache.Ignite.Core\Impl\Cache\Store\CacheStore.cs:line 127
   at Apache.Ignite.Core.Impl.Unmanaged.UnmanagedCallbacks.CacheStoreInvoke(Int64 memPtr) in C:\w\incubator-ignite\modules\platforms\dotnet\Apache.Ignite.Core\Impl\Unmanaged\UnmanagedCallbacks.cs:line 366

Explanation:

• Cache stores share same session within a transaction
• Session in Java is uses to store .NET session handle, so both stores have the same .NET session (which is good: consistent with Java)
• Each store calls sessionEnd, so session gets released multiple times - this causes HandleRegistry exception

Current unit test uses Spring XML with shared PlatformDotNetCacheStoreFactory, which caches created store instance for some reason, so the bug is hidden, since both caches use the same store instance.

Issue Links

• links to: GitHub Pull Request #2331