Comments (3)
Hi, I've been seeing this a lot too, and it seems to kill the job / stop it from recurring. Any thoughts?
from webbackgrounder.
So, read through EntityWorkItemRepository code a little.
EntityWorkItemRepository takes a factory thunk for creating contexts (IWorkItemsContext) which it
- steals the connection from
- runs a query
- disposes of the context and regenerates it IF no exception was thrown during the query
The problem scenario is likely that
a) first time we run a query we threw an exception
b) second time we run a query, the same context item gets reused, but since we already opened the connection for the previous query, boom.
from webbackgrounder.
Just found evidence to confirm the theory, so I'll work on the pull request.
Before the first InvalidOperationException in the logs we have a stack trace going through RunInTransaction.
System.Data.Entity.Infrastructure.DbUpdateException: An error occurred while updating the entries. See the inner exception for details. ---> System.Data.UpdateException: An error occurred while updating the entries. See the inner exception for details. ---> System.Data.SqlClient.SqlException: Transaction (Process ID 495) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource
1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at StackExchange.Profiling.Data.ProfiledDbCommand.ExecuteNonQuery() in C:\Users\sam\Desktop\MiniProfiler\StackExchange.Profiling\Data\ProfiledDbCommand.cs:line 182 at System.Data.Mapping.Update.Internal.DynamicUpdateCommand.Execute(UpdateTranslator translator, EntityConnection connection, Dictionary
2 identifierValues, List`1 generatedValues)
at System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter)
--- End of inner exception stack trace ---
at System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter)
at System.Data.Objects.ObjectContext.SaveChanges(SaveOptions options)
at System.Data.Entity.Internal.InternalContext.SaveChanges()
--- End of inner exception stack trace ---
at System.Data.Entity.Internal.InternalContext.SaveChanges()
at WebBackgrounder.EntityWorkItemRepository.SetWorkItemFailed(Int64 workItemId, Exception exception)
at WebBackgrounder.WebFarmJobCoordinator.<>c__DisplayClass7.b__6()
at WebBackgrounder.EntityWorkItemRepository.RunInTransaction(Action query)
from webbackgrounder.
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