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5.0.0: Npgsql.NpgsqlException (0x80004005): Exception while reading from stream

See original GitHub issue

Hello, after upgrading to 5.0.0 version, this is the error i get for long queries. Long queries get timeout. Happens only on 5.0.0. The same queries / codebase works fine with V3.1.2 or when connected with any local sql client to the same database.

The following is the exception

System.InvalidOperationException
An exception has been raised that is likely due to a transient failure.

System.InvalidOperationException: An exception has been raised that is likely due to a transient failure.
 ---> Npgsql.NpgsqlException (0x80004005): Exception while reading from stream
 ---> System.TimeoutException: Timeout during reading attempt
   at Npgsql.NpgsqlConnector.<ReadMessage>g__ReadMessageLong|194_0(NpgsqlConnector connector, Boolean async, DataRowLoadingMode dataRowLoadingMode, Boolean readingNotifications, Boolean isReadingPrependedMessage)
   at Npgsql.NpgsqlDataReader.NextResult(Boolean async, Boolean isConsuming, CancellationToken cancellationToken)
   at Npgsql.NpgsqlCommand.ExecuteReader(CommandBehavior behavior, Boolean async, CancellationToken cancellationToken)
   at Npgsql.NpgsqlCommand.ExecuteReader(CommandBehavior behavior, Boolean async, CancellationToken cancellationToken)
   at Npgsql.NpgsqlCommand.ExecuteDbDataReaderAsync(CommandBehavior behavior, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReaderAsync(RelationalCommandParameterObject parameterObject, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.InitializeReaderAsync(DbContext _, Boolean result, CancellationToken cancellationToken)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Storage.Internal.NpgsqlExecutionStrategy.ExecuteAsync[TState,TResult](TState state, Func`4 operation, Func`4 verifySucceeded, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at Npgsql.EntityFrameworkCore.PostgreSQL.Storage.Internal.NpgsqlExecutionStrategy.ExecuteAsync[TState,TResult](TState state, Func`4 operation, Func`4 verifySucceeded, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable`1.AsyncEnumerator.MoveNextAsync()
   at Microsoft.EntityFrameworkCore.Query.ShapedQueryCompilingExpressionVisitor.SingleAsync[TSource](IAsyncEnumerable`1 asyncEnumerable, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.Query.ShapedQueryCompilingExpressionVisitor.SingleAsync[TSource](IAsyncEnumerable`1 asyncEnumerable, CancellationToken cancellationToken)

Issue Analytics

State:
Created 3 years ago
Comments:20 (10 by maintainers)

Top GitHub Comments

3reactions

asadcrcommented, Dec 7, 2020

@roji Setting a Command Timeout=0 still does not fix the issue. I will try to compile a runnable sample hopefully. if there is something else you would like me to try, that would be helpful.

2reactions

YohDeadfallcommented, Jan 22, 2021

@etiennecl’s problem was moved to the new issue, but it’s hard to say what was here. Let’s wait a week for @asadcr and close the issue in case of no response. Otherwise, we can close it right now and reopen later.

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