Esent error in the ravendb dev logs - not sure why

[Arun Noronha]

Hi 

We have been seen degrading performance in our raven instances and are trying to troubleshoot why. 

I enabled raven debug logging by inserting the configuration file and saw an ESENT error. 

Would this be a contributor to the degradation issues that we are seeing.

Just a note: 

We have on the one raven server - 10 databases. 

Each database has about 50 indexes of which 25 are map reduce. 

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The folllowing is a snippet of the log : 

2014-10-22 13:48:46.7034,Raven.Storage.Esent.StorageActions.DocumentStorageActions,Warn,Error when trying to open a new DocumentStorageActions,"Microsoft.Isam.Esent.Interop.EsentInvalidInstanceException: Invalid instance handle

   at Microsoft.Isam.Esent.Interop.Session..ctor(JET_INSTANCE instance)

   at Raven.Storage.Esent.StorageActions.DocumentStorageActions..ctor(JET_INSTANCE instance, String database, TableColumnsCache tableColumnsCache, OrderedPartCollection`1 documentCodecs, IUuidGenerator uuidGenerator, IDocumentCacher cacher, EsentTransactionContext transactionContext, TransactionalStorage transactionalStorage)

   at Raven.Storage.Esent.TransactionalStorage.ExecuteBatch(Action`1 action, EsentTransactionContext transactionContext)

   at Raven.Storage.Esent.TransactionalStorage.Batch(Action`1 action)"

2014-10-22 13:48:46.7034,Raven.Storage.Esent.StorageActions.DocumentStorageActions,Warn,Error when trying to open a new DocumentStorageActions,"Microsoft.Isam.Esent.Interop.EsentInvalidInstanceException: Invalid instance handle

   at Microsoft.Isam.Esent.Interop.Session..ctor(JET_INSTANCE instance)

   at Raven.Storage.Esent.StorageActions.DocumentStorageActions..ctor(JET_INSTANCE instance, String database, TableColumnsCache tableColumnsCache, OrderedPartCollection`1 documentCodecs, IUuidGenerator uuidGenerator, IDocumentCacher cacher, EsentTransactionContext transactionContext, TransactionalStorage transactionalStorage)

   at Raven.Storage.Esent.TransactionalStorage.ExecuteBatch(Action`1 action, EsentTransactionContext transactionContext)

   at Raven.Storage.Esent.TransactionalStorage.Batch(Action`1 action)"

2014-10-22 13:48:46.7034,Raven.Storage.Esent.StorageActions.DocumentStorageActions,Warn,Error when trying to open a new DocumentStorageActions,"Microsoft.Isam.Esent.Interop.EsentInvalidInstanceException: Invalid instance handle

   at Microsoft.Isam.Esent.Interop.Session..ctor(JET_INSTANCE instance)

   at Raven.Storage.Esent.StorageActions.DocumentStorageActions..ctor(JET_INSTANCE instance, String database, TableColumnsCache tableColumnsCache, OrderedPartCollection`1 documentCodecs, IUuidGenerator uuidGenerator, IDocumentCacher cacher, EsentTransactionContext transactionContext, TransactionalStorage transactionalStorage)

   at Raven.Storage.Esent.TransactionalStorage.ExecuteBatch(Action`1 action, EsentTransactionContext transactionContext)

   at Raven.Storage.Esent.TransactionalStorage.Batch(Action`1 action)"

2014-10-22 13:48:46.7034,Raven.Storage.Esent.StorageActions.DocumentStorageActions,Warn,Error when trying to open a new DocumentStorageActions,"Microsoft.Isam.Esent.Interop.EsentInvalidInstanceException: Invalid instance handle

   at Microsoft.Isam.Esent.Interop.Session..ctor(JET_INSTANCE instance)

   at Raven.Storage.Esent.StorageActions.DocumentStorageActions..ctor(JET_INSTANCE instance, String database, TableColumnsCache tableColumnsCache, OrderedPartCollection`1 documentCodecs, IUuidGenerator uuidGenerator, IDocumentCacher cacher, EsentTransactionContext transactionContext, TransactionalStorage transactionalStorage)

   at Raven.Storage.Esent.TransactionalStorage.ExecuteBatch(Action`1 action, EsentTransactionContext transactionContext)

   at Raven.Storage.Esent.TransactionalStorage.Batch(Action`1 action)"

2014-10-22 13:48:46.7034,Raven.Storage.Esent.StorageActions.DocumentStorageActions,Warn,Error when trying to open a new DocumentStorageActions,"Microsoft.Isam.Esent.Interop.EsentInvalidInstanceException: Invalid instance handle

   at Microsoft.Isam.Esent.Interop.Session..ctor(JET_INSTANCE instance)

   at Raven.Storage.Esent.StorageActions.DocumentStorageActions..ctor(JET_INSTANCE instance, String database, TableColumnsCache tableColumnsCache, OrderedPartCollection`1 documentCodecs, IUuidGenerator uuidGenerator, IDocumentCacher cacher, EsentTransactionContext transactionContext, TransactionalStorage transactionalStorage)

   at Raven.Storage.Esent.TransactionalStorage.ExecuteBatch(Action`1 action, EsentTransactionContext transactionContext)

   at Raven.Storage.Esent.TransactionalStorage.Batch(Action`1 action)"

[Oren Eini (Ayende Rahien)]

What build are you on?

This usually indicate that there is a running thread that is running after the db was closed.

Hibernating Rhinos Ltd  

Oren Eini l CEO l Mobile: + 972-52-548-6969

Office: +972-4-622-7811 l Fax: +972-153-4-622-7811

 

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[Arun Noronha]

My apologies for not including that information 

We are on build 2.5.2935

We see a lot of IO and memory consumption from the raven process.

The raven instance consumes over 1.5G in some cases with a lot of read and writes and there isn't really that many concurrent users 2-4. 

So we are not sure what is causing these issues.

Thank you very much.

Arun

[Oren Eini (Ayende Rahien)]

Indexing?

[Arun Noronha]

Thanks Oren, 

I will monitor the stats endpoint across all our instances and let you know ..... 

Appreciate the insight!! 

Arun