My first impressions are that there is a multi-threading bug in the "in
memory" storage implementation within the Manager, such that we are
simultaneously attempting to modifying a collection while iterating through
it.
I will take a look at this further, and I expect the change will be in a
later release of Alchemi.
Jonathan
On 3/2/07, vronk <[EMAIL PROTECTED]> wrote:
Hi Alchemi Developers,
we use alchemi grid application since 1 year.
Sometimes we have a problem with executors.
We use Alchemi 1.0.5 with in memory database.
If the manager and 2 executors runs about
2 days we notice an exception in the executor.
This exception concerns a GThread.
The GThread crashes and calculate not to the end.
This execption seems to occur randomly.
In the executor i can found the following exception
message:
...
2007-03-02 18:51:20,656 [ExecuteThreadInAppDomain-thread] WARN - grid
thread #
7e0ba4ec-51e3-4a0f-ac74-99492e9d732f.1 failed (
System.InvalidOperationException)
System.InvalidOperationException: Collection was modified; enumeration
operation may not execute.
Server stack trace:
at System.Collections.ArrayList.ArrayListEnumeratorSimple.MoveNext()
at Alchemi.Manager.Storage.InMemoryManagerStorage.GetThread(String
applicationId, Int32 threadId)
at Alchemi.Manager.MThread.set_State(ThreadState value)
at Alchemi.Manager.GManager.Executor_SetFinishedThread(SecurityCredentials
sc, ThreadIdentifier ti,
Byte[] thread, Exception e)
at
System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr
md, Object[] args,
Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]&
outArgs)
at
System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(RuntimeMethodHandle
md,
Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext,
Object[]& outArgs)
at
System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage
msg, Int32 methodPtr,
Boolean fExecuteInContext)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage
reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&
msgData, Int32 type)
at Alchemi.Core.IManager.Executor_SetFinishedThread(SecurityCredentials
sc, ThreadIdentifier ti, Byte[]
thread, Exception e)
at Alchemi.Executor.GExecutor.ExecuteThreadInAppDomain()
2007-03-02 18:51:20,687 [ExecuteThreadInAppDomain-thread] INFO - Exited
ExecuteThreadInAppDomain...
2007-03-02 18:51:20,687 [ExecuteThreadInAppDomain-thread] INFO - Started
ExecuteThreadInAppDomain...
...
I have no clue wy this problem occurs.
Please take a look on this problem.
Thanks in advance!
Frank Piorko
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share
your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
alchemi-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/alchemi-users
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
alchemi-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/alchemi-users
