RowLimit - The allowed range of values is 0 to 500

Question

I have a KQL query used with KeywordQuery that used to work in SP 2010 but no longer works in 2013:

scope="All Sites" AND path:"/sites/" AND path:"/Pages/ThisPage.aspx"

The error that’s given is:

ArgumentOutOfRangeException:
The allowed range of values is 0 to 500    Parameter name: RowLimit
  at Microsoft.Office.Server.Search.Query.QueryProperties.ValidateRowLimit(Int32 value)
  at Microsoft.Office.Server.Search.Query.QueryProperties.set_RowLimit(Int32 value)

I need to set RowLimit to 1000, but I don’t know why there is a limit of 500. Decompiling the code for Microsoft.Office.Server.Search.Query.QueryProperties, RowLimit is compared against a property called MaxRowLimit which defaults to 10000, so I suppose that value is being set by some other means (I'm not modifying the value from the default)

My decompiler suggests that MaxRowLimit is set in a few ways:

• this.MaxRowLimit = cachedSearchServiceApplicationInfo.MaxRowLimit;
• this.MaxRowLimit = cachedSearchServiceApplicationInfo.DiscoveryMaxRowLimit;
• By setting the Query property
• During internal cloning

I've checked the service application but can't see a way to set a max row limit for that application.

Is this a search service application configuration issue?

Update: I followed this blog post to check the Max setting using powershell and the result was 10000:

PS> $ssa = Get-SPEnterpriseSearchServiceApplication
PS> $ssa.GetSetting('Config:qp_MaxResultsReturned')
10000

Answer 1

Decompiling the SearchServiceApplication we see that MaxRowLimit on that application defaults to 500 and that value is passed to the query.

The SearchServiceApplication MaxRowLimit can be modified as follows:

PS> $ssa = Get-SPEnterpriseSearchServiceApplication
PS> $ssa.MaxRowLimit = 1000
PS> $ssa.Update()
PS> iisreset