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Crawl Problem with Multiple Value Lookup Fields Acknowledged by Microsoft

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Last year we at PeopleNet ran into a problem when using lists with many columns, i.e. around 1600!

Indexing such a list would almost always fail with a timeout or out of memory error in the log, even though SharePoint is supposed to be able to handle at least 2000 columns without performance issues.

We corresponded back and forth with a Microsoft support engineer about the problem and it turned out that lists with many multiple value lookup fields will bring the SQL Server to its knees fairly quickly.

Microsoft has recently released a KB article in relation to this, however, it doesn’t specifically single out multiple value lookup fields as the culprit, although they almost always are.

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Written by Thomas Sondergaard

August 13, 2009 at 7:39 am

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