http://ayende.comAyende @ RahienCopyright (C) Ayende Rahien 2004 - 2021 (c) 202660Or, nevermind :) I see that you're not necessarily storing the KV pairs on multiple instances; just that you are distributing the load overall. If you ever would add fault-tolerance, communication between endpoints would be needed along with a Paxos implementation. http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment9http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment9Sun, 18 Jan 2009 20:29:40 GMTI think you will need a proper implementation of Paxos to do proper versioning. Otherwise two actors can commit 'version 3' and the redundant nodes wind up having different instances of the data. http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment8http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment8Sun, 18 Jan 2009 20:06:46 GMTThanks Oren, Now all the tests pass. http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment7http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment7Sat, 17 Jan 2009 18:58:11 GMTRafal, I'll have another post about it http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment6http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment6Sat, 17 Jan 2009 11:14:40 GMTOmer, add ColumndefGrbit.ColumnTagged See what happens. http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment5http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment5Sat, 17 Jan 2009 11:14:16 GMTCan you give a 'real world' example of Rhino.DHT use? R http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment4http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment4Sat, 17 Jan 2009 11:00:48 GMTThis is the line: Api.JetAddColumn(session, tableid, "data", new JET_COLUMNDEF { coltyp = JET_coltyp.LongBinary, grbit = ColumndefGrbit.ColumnNotNULL }, null, 0, out columnid); And I'm indeed running on XP (SP3). http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment3http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment3Sat, 17 Jan 2009 10:55:37 GMTI think that this is the case because you are running this on XP or 2003. I haven't tested it there. What is the column it it failing to create? http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment2http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment2Sat, 17 Jan 2009 10:23:14 GMTI tried running the supplied tests, but I always get Esent exceptions: Microsoft.Isam.Esent.Interop.EsentException: Error TaggedNotNULL (JET_errTaggedNotNULL, No non-NULL tagged columns). The Esent part of the callstacks is always this: c:\OSS\ManagedEsent\EsentInterop\CheckedApi.cs(867,0): at Microsoft.Isam.Esent.Interop.Api.Check(Int32 err) c:\OSS\ManagedEsent\EsentInterop\CheckedApi.cs(343,0): at Microsoft.Isam.Esent.Interop.Api.JetAddColumn(JET_SESID sesid, JET_TABLEID tableid, String column, JET_COLUMNDEF columndef, Byte[] defaultValue, Int32 defaultValueSize, JET_COLUMNID& columnid) Do I need to enable some system service to enable Esent ? http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment1http://ayende.com/3813/rhino-dht-persistent-distributed-storage#comment1Sat, 17 Jan 2009 10:20:24 GMT