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From "Shad Storhaug (Jira)" <j...@apache.org>
Subject [jira] [Commented] (LUCENENET-646) Application pool crashes due to missing index file
Date Mon, 10 Feb 2020 16:38:00 GMT

    [ https://issues.apache.org/jira/browse/LUCENENET-646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17033737#comment-17033737
] 

Shad Storhaug commented on LUCENENET-646:
-----------------------------------------

Version 3.x is no longer being actively supported, and anyone who was involved with supporting
that version is no longer involved in the project.

So, you basically have 3 options:

1. Upgrade to 4.8.0 beta. According to [Itamar's blog post from 2016|https://code972.com/blog/2016/07/98-lucene-net-4-8-is-in-beta-and-we-need-your-help],
it was then more stable then than 3.0.3 is. Since 2016, 4.8.0 has been improved quite a bit.
We have fixed all known crashes and cross-platform issues as well as made several impactful
performance improvements. Most importantly, we are actively fixing any bugs that are reported.
 2. Clone the repo and from the [3.0.3 branch|https://github.com/apache/lucenenet/tree/3.0.3],
fix the issue you are having, submit a PR back here and we will do what we can to get it released
on NuGet.
 3. Fork the repo and from the [3.0.3 branch|https://github.com/apache/lucenenet/tree/3.0.3],
fix the issue, and deploy a private copy by your own means.

If you are using at least .NET Framework 4.5, I strongly urge you to consider upgrading to
4.8.0-beta.

> Application pool crashes due to missing index file
> --------------------------------------------------
>
>                 Key: LUCENENET-646
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-646
>             Project: Lucene.Net
>          Issue Type: Bug
>          Components: Lucene.Net Core
>    Affects Versions: Lucene.Net 3.0.3
>         Environment: Windows Server 2016, vers 1607.
> .net version (Release value in regedit: 460805).
>            Reporter: Jarek Bogusz
>            Priority: Critical
>         Attachments: CUNY_GC.DummyIndex.crashes.zip, e1.jpg, e1.txt, e2.jpg, e2.txt,
e3.jpg, e3.txt, prod.net.vers.jpg
>
>
> This problem is critical because when it happens the application pool crashes and the
entire website stops working with 503 error code.
> Errors are visible in Windows Event Log (Application), attached.
> When index files are deleted and index is rebuilt the problem goes away.
> I was not able to reproduce the problem by copying corrupted index files (also attached)
to another server.
> By googling the error message it looks like it's coming from file CompoundFileReader.cs,
method OpenInput.
> if (entry == null)
>  throw new System.IO.IOException("No sub-file with id " + id + " found");



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