SharePoint 2010 Crawl : Difference between Full and Incremental crawl

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SharePoint2010

What is the difference between running Full Crawl and Incremental Crawl and which is preferred in different scenario?
Does site level permission get reflected in Incremental Crawl?

Posted 8-Mar-13 3:54am

kulbhushan18

Updated 8-Mar-13 3:56am

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kulbhushan18 8-Mar-13 9:58am

It is known that item level permissions are reflected in incremental crawl, but what about site collection level permission.

ZurdoDev 8-Mar-13 11:08am

This sounds like a great question for Miss google. I did so and found this, http://social.technet.microsoft.com/wiki/contents/articles/230.full-and-incremental-crawls-in-microsoft-office-sharepoint-server-2007-search.aspx

kulbhushan18 9-Mar-13 1:42am

thanks for your answer Ryan, me too stumbled upon this article, my concern is:
If a new user/group is given permission to a web/siteCollection; Does it shown up using Incremental Crawl? (in SP2010)

AnandSharmaUK 28-Mar-13 5:37am

I thought crawling is meant for search indexing and nothing to do with permission setting.

kulbhushan18 28-Mar-13 10:25am

Example: user A has been recently assigned full permission for siteCollection S1, so a search for him would fetch results from S1. To take this change effect, what Crawl is required. Is incremental crawl sufficient or Full Crawl is mandatory.

and ofcourse user A, before being granted the permission, won't get result for search from S1.

I am sorry if my question was not elaborated, hope above example explains my query.

AnandSharmaUK 28-Mar-13 11:55am

No crawl is required here I believe. It will straightaway display all the results as per his permission.

Kapil Dave 7-May-13 7:43am

Incremental crawl covers the following scenarios, where SharePoint index files will be updated and search results will affected without the need to perform full crawl:
Adding new document to document library or new item to list
Edit current document content
Delete document (incremental crawl will detect the deletion and removes it from the index and from search results).
Changing Item permissions.
Document properties (columns)
Note1: a full crawl should be done at least once before performing incremental crawl.

Note2: the above scenarios are covered for crawled content within SharePoint 2010/2013 farm, (not file shares , exchange public folders, custom connectors , etc… for those scenarios incremental crawl behavior might differ).

Full Crawl includes the following scenarios :
If the incremental crawl failed to crawl content for errors , Incremental crawl removes the content from index until next full crawl.
When a software update for SharePoint or service pack is installed on servers in the farm, full crawl is required.
Add a new mapping for the Managed Metadata property which used as refinements in search results. (e.g. add new filter in search center for documents to refine results by division ).
To include document changes on a non SharePoint 2013 sites or older versions of SharePoint, like ASPX pages on Windows SharePoint Services 3.0 or Microsoft Office SharePoint Server 2007 sites.
You want to detect security changes that were made on a file share after the last full crawl of the file share.
Crawl rules have been added, deleted, or modified which is used to include or exclude sites URLs to be crawled.
Creating server name mappings.

kulbhushan18 8-May-13 2:51am

Thanks Kapil..

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Deepthi Viswanathan Nair · Accepted Answer · 2013-09-09T19:10:00

Solution 1

Adding 2 more scenarios for full crawl.

1. Repair a corrupted index

2.The credentials for the user account that is assigned to the default content access account or a crawl rule have changed.

Posted 9-Sep-13 19:10pm

Deepthi Viswanathan Nair