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We are running a 4.7.0 site on a web farm, consisting of three servers, a single database, and using DFRS to keep the umbraco file system in order.
Recently we've had issues with Lucene crashing the app pool, and bringing dowh the site with a 503 error. The only way we've found to fix it is to delete the /App_Data/ExamineIndexes folder & all of it's contents. Umbraco then recreates the folder, and the site works for a while then the same thing happens.
The first error message in the umbracolog table started with:
[UmbracoExamine] Error optimizing Lucene index,background merge hit exception:
We've been running umbraco for three years, and have never seen this issue. This is our first web farm installation.
Is it possible that the DFRS is causing the issue, and/or any ideas on how to stop this happening?
I've searched exhaustively and found one or two people having similar/the same issues, but no resolutions were posted.
Really would like to get this figured out as we can't have this site going down again.
Any information would be massively appreciated, thanks in advance. I'd be happy to get any more technical information that's needed.
Anyone looking for the reply to this:
Hi Heather, This link no longer works, has it been moved?
Hmm... That link was posed in 2011, so I think there is a good chance it has been moved. Unfortunately, it wasn't my site or project so I can't say where it has gone. Sorry.
It's OK. I deleted the Lucene indexes under TEMP and that solved it. Thanks though.
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