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Forums Using DNN Platform Performance and Optimization

Issues with DNN Search Functionality

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AntonioG
New Around Here Send Private Message
Posts: 7
New Around Here
5/29/2024 1:52 PM

The portal is currently running on DNN version 9.9.0. I initially upgraded to version 9.10.2, but during the update in the browser, I received a 502 error. After refreshing the page, everything seemed fine. I then attempted to remove Telerik, and while installing the Resource Manager module, the 502 error reappeared. After another page refresh, the issue seemed resolved. Ultimately, I decided to restore the site to version 9.9.0 using a previously made backup.

After checking the logs, I noticed a recurring general exception related to Lucene that has been appearing for months.

- Here is an example of the error:

General Exception AbsoluteURL DefaultDataProvider DotNetNuke.Data.SqlDataProvider DotNetNuke AbsoluteURL: DefaultDataProvider:DotNetNuke.Data.SqlDataProvider, DotNetNuke ExceptionGUID:9811f6a1-7486-4312-8a50-938b6b6fa240 AssemblyVersion: PortalId:-1 UserId:-1 TabId:-1 RawUrl: Referrer: UserAgent: ExceptionHash:EGZHbM0vOAj2Aq6c6aIdYvTUvNA= Message:Index was outside the bounds of the array. StackTrace: at Lucene.Net.Util.BitVector.Get(Int32 bit) at Lucene.Net.Index.SegmentTermDocs.ReadNoTf(Int32[] docs, Int32[] freqs, Int32 length) at Lucene.Net.Search.TermScorer.NextDoc() at Lucene.Net.Search.ConjunctionScorer..ctor(Similarity similarity, Scorer[] scorers) at Lucene.Net.Search.BooleanScorer2.CountingConjunctionSumScorer(List`1 requiredScorers) at Lucene.Net.Search.BooleanScorer2.MakeCountingSumScorerSomeReq() at Lucene.Net.Search.BooleanScorer2..ctor(Similarity similarity, Int32 minNrShouldMatch, List`1 required, List`1 prohibited, List`1 optional) at Lucene.Net.Search.BooleanQuery.BooleanWeight.Scorer(IndexReader reader, Boolean scoreDocsInOrder, Boolean topScorer) at Lucene.Net.Index.DocumentsWriter.ApplyDeletes(IndexReader reader, Int32 docIDStart) at Lucene.Net.Index.DocumentsWriter.ApplyDeletes(SegmentInfos infos) at Lucene.Net.Index.IndexWriter.ApplyDeletes() at Lucene.Net.Index.IndexWriter.DoFlushInternal(Boolean flushDocStores, Boolean flushDeletes) at Lucene.Net.Index.IndexWriter.DoFlush(Boolean flushDocStores, Boolean flushDeletes) at Lucene.Net.Index.IndexWriter.PrepareCommit(IDictionary`2 commitUserData) at Lucene.Net.Index.IndexWriter.Commit(IDictionary`2 commitUserData) at DotNetNuke.Services.Search.Internals.LuceneControllerImpl.Commit() at DotNetNuke.Services.Search.SearchEngineScheduler.DoWork() InnerMessage: InnerStackTrace: Source:Lucene.Net FileName: FileLineNumber:0 FileColumnNumber:0 Method: Server Name:

- The scheduler shows the following error during content indexing:

Search: Site Crawler
Starting. Content change start time 9/19/2023 12:22 PM
  Deleted Objects: 0
  Tabs Indexed: 6
  Modules (Metadata) Indexed: 5
  Modules (Content) Indexed: 41
  Users: 64
Total Items Indexed: 116
EXCEPTION: Index was outside the bounds of the array.

- Problems with the Search Bar:
  The search bar does not return any results.
  Clicking on the "search" option in the site settings menu does nothing and generates an error in the browser console -> 
API/PersonaBar/SiteSettings/GetBasicSearchSettings:1 Failed to load resource: the server responded with a status of 502 ()

 

Any suggestions or similar experiences that could help me resolve these issues would be greatly appreciated.

Thank you in advance for your help!

Note: The site was previously moved from one server to another, and uses EasyDnnNews module

David Poindexter
Veteran Member Send Private Message
Posts: 350
Veteran Member
5/29/2024 2:35 PM
A 502 error indicates something wrong, most likely, beyond the purview of DNN. It is most likely due to the way the web server and/or proxy is setup. By the way, I highly recommend upgrading to the latest version of DNN (currently 9.13.3).

David Poindexter


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Will Strohl
Senior Member Send Private Message
Posts: 1542
Senior Member
5/29/2024 2:38 PM
I agree with David. Upgrading DNN can often resolve a lot of issues. It really should be kept up with. Troubleshooting an older version is not really a great idea, unless it's a configuration issue. In this case, there's clearly something much larger in scope.
James Clarkson
Growing Member Send Private Message
Posts: 82
Growing Member
5/29/2024 6:44 PM
Resetting Lucene might help, or get you past that error to find the cause of the 502.

First, please take a backup !
Then...

In Scheduler
DISABLE the Search: Site Crawler

Delete contents of /App_Data/Search
(might need to put site offline or recycle the application pool first to do this)

In SQL Console

-- start reindex for all portals, file crawler
DELETE SH FROM ScheduleHistory SH
INNER JOIN Schedule S
ON SH.ScheduleID = S.ScheduleID
WHERE S.TypeFullName = 'DotNetNuke.Services.Search.SearchEngineScheduler,DOTNETNUKE'
OR S.TypeFullName = 'DotNetNuke.Services.Search.SearchEngineScheduler, DOTNETNUKE'

In Scheduler
RE-ENABLE the Search Crawler

In Site Settings -> Search -> Basic Settings
re-index Content
AND re-index Host Content

In Settings -> Servers
Clear Cache

In Scheduler
Check that the Scheduler has actually started !!!


THAT MIGHT BE ENOUGH, OR IF Search Crawler shows a write.lock error like this ...
Search: Site Crawler
Starting. Content change start time 1/25/2024 7:43 PM
EXCEPTION: Lock obtain timed out: NativeFSLock@[path]\App_Data\Search\write.lock

In Settings -> Servers -> Web Servers
UNLESS you run a web farm there should only be 1 entry for your web server which should have url that matches the live site address - edit if not the case
then restart the application
Check the Scheduler again
make sure it started (start it if needed)
David Lee
Advanced Member Send Private Message
Posts: 128
Advanced Member
5/30/2024 2:44 AM
I would always try and upgrade to the latest version before I start troubleshooting. It sounds like you can upgrade?, but the removal of the Telerik causes an error?
Can you give us more information about the upgrade error, I think that is the one that you need to solve first.

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