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From "Pavel Tupitsyn (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (IGNITE-5730) .NET: Failed to load ignite.jni.dll when starting up multiple nodes
Date Wed, 12 Jul 2017 09:38:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-5730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16083676#comment-16083676
] 

Pavel Tupitsyn edited comment on IGNITE-5730 at 7/12/17 9:37 AM:
-----------------------------------------------------------------

Actully, the problem is not with {{GetTempDirectoryName()}}, but because we clean up old temporary
directories on startup ({{TryCleanTempDirectories}}), which interferes with other nodes (one
node creates a folder, another one tries to remove it).

{{TryCleanTempDirectories}} also runs syncronously and slows down startup when temp dir is
huge.

This leaves us with a problem of cleaning up temp directories. Ideally, this should be done
when Ignite node shuts down; however, we can't use {{DomainUnload}} event, since more than
one domain can be there, and they use the same native dll.


was (Author: ptupitsyn):
Actully, the problem is not with {{GetTempDirectoryName()}}, but because we clean up old temporary
directories on startup ({{TryCleanTempDirectories}}), which interferes with other nodes (one
node creates a folder, another one tries to remove it).

{{TryCleanTempDirectories}} also runs syncronously and slows down startup when temp dir is
huge.

> .NET: Failed to load ignite.jni.dll when starting up multiple nodes
> -------------------------------------------------------------------
>
>                 Key: IGNITE-5730
>                 URL: https://issues.apache.org/jira/browse/IGNITE-5730
>             Project: Ignite
>          Issue Type: Bug
>          Components: platforms
>    Affects Versions: 2.0
>            Reporter: Pavel Tupitsyn
>            Assignee: Pavel Tupitsyn
>              Labels: .NET
>             Fix For: 2.2
>
>
> When starting multiple nodes at once (with a script of some kind), failure to load unmanaged
dll can occur:
> {code}
> for (int i = 0; i < 30; i++)
> {
> 	Process.Start(@"cmd.exe", @"/k Apache.Ignite.exe");
> }
> {code}
> Exception:
> {code}
> ERROR: System.TypeInitializationException: The type initializer for 'Apache.Ignite.Core.Impl.Unmanaged.UnmanagedUtils'
threw an exception. ---> Apache.Ignite.Core.Common.IgniteException: Failed to load ignite.jni.dll:
126
>    at Apache.Ignite.Core.Impl.Unmanaged.UnmanagedUtils..cctor()
>    --- End of inner exception stack trace ---
>    at Apache.Ignite.Core.Impl.Unmanaged.UnmanagedUtils.Initialize()
>    at Apache.Ignite.Core.Impl.IgniteUtils.LoadDlls(String configJvmDllPath, ILogger log)
>    at Apache.Ignite.Core.Ignition.Start(IgniteConfiguration cfg)
>    at Apache.Ignite.IgniteRunner.Main(String[] args)
> {code}
> Error codes may be 5 (ERROR_ACCESS_DENIED) or 126 (ERROR_MOD_NOT_FOUND).



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