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DFS 9.0.0 - Could not find property 'CheckForThreshold' on object of type: Sitecore.ContentSearch.Maintenance.Strategies.ManualStrategy

DFS 9.0.0 - Could not find property 'CheckForThreshold' on object of type: Sitecore.ContentSearch.Maintenance.Strategies.ManualStrategy

Owned by Martin Ulisse
Last updated: Feb 26, 2018

For this particular error we saw that no content published to Sitecore delivered from Digizuite would be shown. When we looked in the log files, we saw the following error:

dfs.log
6928 01:38:58 ERROR Exception has been thrown by the target of an invocation.
Exception: System.Reflection.TargetInvocationException
Message: Exception has been thrown by the target of an invocation.
Source: mscorlib
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Sitecore.Reflection.ReflectionUtil.CreateObject(Type type, Object[] parameters)
   at Sitecore.Configuration.DefaultFactory.CreateFromTypeName(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, Boolean assert)
   at Sitecore.Pipelines.CorePipelineFactory.GetObjectFromType(XmlNode processorNode)
   at Sitecore.Pipelines.CorePipelineFactory.GetProcessorObject(XmlNode processorNode)
   at Sitecore.Pipelines.CoreProcessor.GetMethod(Object[] parameters)
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain)
   at DFS.ContentSearch.PipelineBasedAssetStore`1.FindBySiloIdAndAssetId(String assetSiloId, String assetId)
   at DFS.Services.Pipelines.GetMedia.GetAssetItem.Process(GetMediaPipelineArgs args)
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, String pipelineDomain)
   at DFS.Services.Pipelines.GetMedia.Services.RunGetMediaPipelineService.RunGetMediaPipeline(MediaRequest mediaRequest, HttpRequestMessage httpRequest)
   at DFS.Services.Services.MediaActionResult.ExecuteAsync(CancellationToken cancellationToken)

Nested Exception

Exception: System.InvalidOperationException
Message: Could not find property 'CheckForThreshold' on object of type: Sitecore.ContentSearch.Maintenance.Strategies.ManualStrategy
Source: Sitecore.Kernel
   at Sitecore.Configuration.DefaultFactory.AssignProperties(Object obj, Object[] properties)
   at Sitecore.Configuration.DefaultFactory.AssignProperties(XmlNode configNode, String[] parameters, Object obj, Boolean assert, Boolean deferred, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.CreateObject(String configPath, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.CreateFromReference(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.GetInnerObject(XmlNode paramNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.AssignProperties(XmlNode configNode, String[] parameters, Object obj, Boolean assert, Boolean deferred, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.GetInnerObject(XmlNode paramNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.AssignProperties(XmlNode configNode, String[] parameters, Object obj, Boolean assert, Boolean deferred, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.CreateObject(String configPath, String[] parameters, Boolean assert)
   at Sitecore.ContentSearch.ContentSearchManager.get_SearchConfiguration()
   at Sitecore.ContentSearch.ContentSearchManager.GetIndex(String name)
   at DFS.ContentSearch.Pipelines.ProcessorBase`1..ctor(String indexName)
   at DFS.ContentSearch.Pipelines.AssetStore.FindAsset.FindAsset..ctor()

Furthermore we would see the following error in the Sitecore logs:

log
6732 01:37:49 ERROR Error loading hook: <hook type="Sitecore.ContentSearch.Hooks.Initializer, Sitecore.ContentSearch" patch:source="Sitecore.ContentSearch.config" xmlns:patch="http://www.sitecore.net/xmlconfig/" />
Exception: System.InvalidOperationException
Message: Could not find property 'CheckForThreshold' on object of type: Sitecore.ContentSearch.Maintenance.Strategies.ManualStrategy
Source: Sitecore.Kernel
   at Sitecore.Configuration.DefaultFactory.AssignProperties(Object obj, Object[] properties)
   at Sitecore.Configuration.DefaultFactory.AssignProperties(XmlNode configNode, String[] parameters, Object obj, Boolean assert, Boolean deferred, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.CreateObject(String configPath, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.CreateFromReference(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.GetInnerObject(XmlNode paramNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.AssignProperties(XmlNode configNode, String[] parameters, Object obj, Boolean assert, Boolean deferred, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.GetInnerObject(XmlNode paramNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.AssignProperties(XmlNode configNode, String[] parameters, Object obj, Boolean assert, Boolean deferred, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper)
   at Sitecore.Configuration.DefaultFactory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert)
   at Sitecore.Configuration.DefaultFactory.CreateObject(String configPath, String[] parameters, Boolean assert)
   at Sitecore.ContentSearch.ContentSearchManager.get_SearchConfiguration()
   at Sitecore.ContentSearch.Hooks.Initializer.Initialize()
   at Sitecore.Events.Hooks.HookManager.LoadAll()

Resolution

It is important to understand that DFS relies on a working Lucene/Solr configuration, but clearly the error in the Sitecore log indicates that the Lucene index is not properly initializing here. The hook that initializing the Lucene index is failing to load because the ManualStrategy does not contain the property CheckForThreshold.

When DFS initializes, we also initialises two indexes: dfs_asset_master_index and dfs_asset_web_index and if Lucene/Solr is not running, this will fail. It is exactly what we see here (I.e. dfs.log Sitecore.ContentSearch.ContentSearchManager.GetIndex(String name)).

To fix this we searched for all entries that would use the ManualStrategy and changed these to use another strategy. It turned out that the client was using Coveo as an alternative search engine. Coveo hooks into Sitecore and uses the same IndexUpdateStrategies and for some reason Coveos implementation of the ManualStrategy seemed to use the property CheckForThreshold which is not supported for the ManualStrategy.

So the resolution here was to not use the Strategy, but if one strictly needs to use the failing Strategy, then we suggest involving Sitecore in debugging why that specific Strategy is failing to initialize.

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