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Toronto SharePoint User Group. Bill Brockbank Navantis Inc. billb@navantis.com. Architecture and Topology. Logical Architecture - Components Crawl Content Processing Analytics Processing Index Administration Query Processing Search Process Topologies - Examples. Logical Architecture.
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Toronto SharePoint User Group Bill BrockbankNavantis Inc.billb@navantis.com
Architecture and Topology • Logical Architecture - Components • Crawl • Content Processing • Analytics Processing • Index • Administration • Query Processing • Search Process • Topologies - Examples
Crawling the Content • The crawl role is responsible for crawling content sources. It delivers crawled items – both the actual content as well as their associated metadata – to the content processing component • Invokes connectors or protocol handlers to content sources to retrieve data • Does not do any document parsing (Content Processing Component does that) • Information about content sources, schedules, etc. are synchronized to the registry on crawl role servers from the search admin database • The Crawl Database is used by the crawl component to store information about crawled items and to track crawl history • Holds information such as the last crawl time, the last crawl ID and the type of update during the last craw.
Content Processing • Content Processing Component • Processes crawled items and feeds these items to the index component • Document Parsing happens through Format Handlers • iFilter is supported through a Generic iFilter format handler • iFilters are still the extensibility platform for SharePoint 15 • Heart of the indexing process: transforms crawled items into artifacts that can be included in the search index by carrying out operations such as document parsing and property mapping • Performs linguistic processing at index time (e.g. language detection and entity extraction) • Writes information about links and URLs to the Link Database directly • Generates phonetic name variations for people search
Analytics Processing Component • Search Analytics analyzes crawled items and how users interact with search results. • Usage analytics analyzes usage events e.g. like views from the event store • When an user does an action (e.g. view a page) the event is collected in usage files on the WFE’s and regularly pushed to event store where they are stored until processed • Results are then returned to the Content Processing Component to be included in the search index • You can add write code to add custom events • Analytics Processing Component supports scaling out: • Add more APC roles to have analysis complete faster • Adding more Link databases to increase capacity for links and search clicks, and potentially speed up the DB extraction • Adding more reporting databases to store more reports as well as improving SQL throughtput in retrieveing reports
List of Sub Analyses • Search Analytics • Link and Anchor text analysis • Click Distance • Search Clicks • Deep Links • Social Tags • Social Distance • Search Reports • Usage Analytics • Recommendations • Usage Counts • Acivity Ranking
Index Component • Used in both feeding and query processes: • Feeding: receives processed items from the content processing component and writes those items to index files • Query: receives queries from the query processing component and provides results sets in return • It also physically moves around indexed content when the index architecture is changed by the Search Administration Component
Query Processing Component • Performs linguistic processing at query time: • Word breaking, stemming, query spellchecking, thesaurus • Analyzes and processes search queries and results. • When the component receives a query from the search front-end, it analyzes and processes the query to attempt to optimize precision, recall and relevancy. The processed query is then submitted to the index component(s). • As part of this it also decides which query rules are applicable, which index to send the query to, and whether to do any pre- or post-processing of the query • The index component returns a result set based on the processed query back to the query processing component, which in turn processes that result set before sending it back to the search front-end.
Search Administration • Search Admin Component • Runs number of system processes required for search • Is responsible for search provisioning and topology changes • Coordinates search components – Content Processing, Query Processing, Analytics, and Indexing. • Search Admin DB • Stores search configuration data: • Topology • Crawl rules • Query rules • Managed property mappings • Content sources • Crawl schedules • Stores Analytics settings • Does not store ACLs anymore
Search Processes • Host Controller • A Windows Service that supervises NodeRunner process(es) on a given box • It restarts failed NodeRunner processes: if a NodeRunnerfails, the HostController will detect this and restart it • NodeRunner.exe • Is the process that hosts the search components • There might be several instances of this process on a single box • MSSearch.exe • Is the Windows Service who hosts the Crawl Component
Search Host Process NodeRunner.exe NodeRunner.exe • Multiple NodeRunner instances can run on the same server • Each NodeRunner instance hosts one search component • E.g. If you have two index replicas on one server you will have two NodeRunner instances – one for each replica • On a default single server install there will be 5 instances of the NodeRunner.exe process Crawl Component Content Processing Component NodeRunner.exe NodeRunner.exe Index Component Query Processing Component NodeRunner.exe Analytic Processing Component
Query Configuration • Ranking • Query Spell Correction • Query Rules
Ranking • Ranking model describes which criteria are included in sorting, how much they contribute to the rank score and how they relate to one another • Custom ranking models are managed through PowerShell and the public OM using XML files as it was in SharePoint 2010 • Ranking model for a specific query can be selected at query time by setting the RankingModelId of the query; otherwise default is used • NOTE: This property is currently not available in the OOB search results web part
Working with Ranking Models • A search service administrator can do the following basic operations on the rank models: • List ranking models • Specify a default ranking model • Change an existing custom ranking model • Delete an existing custom ranking model • Create a new ranking model (either based on an existing one or from scratch) • Import and export a ranking model to XML • Specify how much weight the various properties should have in the model • These operations are all administered through PowerShell • There may be a CodePlex GUI-based solution after RTM
Query Spelling Correction • Customizations to Query Spelling Correction is now managed in the term store – both inclusions and exclusions • We also still have a dynamic dictionary that is created based on content in the index, or you can switch to the static OOB dictionary • Here’s an example: • Provides customizable • “did you mean” functionality:
Query Rules • Query Rules are a new feature in SharePoint 15 that help act upon the “intent” of a query • Query Rules are composed of three top level elements: • Query Conditions (i.e. matching rules) • Query Actions (i.e. what do you do when you find a match) • Publishing Options (i.e. when should this rule be active) • Rules are created at the site collection level, but you will probably also be able to create them at the SSA level through PowerShell (TBD by RTM) • Several Query Rules are provided out of the box and can be found in the Site Settings for each site collection
Query Rules Implementation • Query Rules allow you to have search requests from a user trigger multiple queries and multiple result sets. • This differs from SharePoint 2010 where there were only simple queries – one query has one set of results. • All matching Query Rules can generate results; the query orchestration engine retrieves all the different sets of search results and organizes them for rendering to the user • The results themselves are then rendered using a new feature called Query Results display templates, which is discussed later
Query Rules - Conditions • Conditions allow you to define the circumstances under which your query rule will apply • You can choose to match on these use cases: • Query contains a specific word or words • Query contains a word in a specific dictionary • Query contains an action word that matches a specific phrase or term set • Query is common in a different source (like Videos Result Source) • Results include a common result type (like file type) • Advanced rule – match across a set of terms, dictionary, regular expression, etc. • You can also match if a query is against a specific Result Source or category (like a Topic Page category) • Each Query Rule can have multiple conditions
Query Rule Actions • There are three types of actions: • Assign a “promoted result” to the query • Promoted result is similar to Best Bets with SharePoint 2010 or Visual Best Bets with FAST Search 2010, but much more flexible • Create and display a Result Block • Result blocks specify an additional query to run and how to display results • The feature includes a full query designer so you can build and test queries before finalizing them • You can include the results above those returned by core results, or interleaved by ranking • You can also choose custom display templates instead of the default for the result • Change the query that returns the core results • Change the original query by changing the query terms, adding additional terms, apply an XRANK formula to the query, etc. • You can add multiple best bets or results blocks for each query rule
Query Rules Publishing Options • Publishing options for a Query Rule determine when it will be used • It works just like rules for publishing a page in a publishing site template • You decide whether the rule is active • You decide when to start and when to finish using the rule, or don’t set dates at all and it’s always used • You can configure a review date, which is basically an email reminder for you to look at the rule again • Publishing a rule is particularly useful in commerce scenarios. For example, queries that should return items you want to percolate to the top and sell during a particular period of time
Search UI Configuration • Result Types • Display Templates • Search Navigation • Search Refinement • Query Suggestions • Thumbnail Previews • Site Level Search Admin Summary
Result Types • SharePoint 15 includes a new framework for presenting search results to end users called result types • Result types have several elements that enable each type to be rendered differently:
Result Type Rules • You can create a variety of different rules on which to match: • Equality(= or !=), comparison (< or >), or logical (AND or ORor NOT) • You can have multiple rules as a condition • You can use managed properties in a rule • In B1R there will be a new UI for creating these rules, so what you see in the B1 bits will change quite a bit Example
Result Type Management • Result types are managed as follows: • Result Types can apply to an entire search service application or to a specific site or web • OOB Result Types are immutable but can be overridden with a copy • There is an inheritance hierarchy to result types in a site: the current web, plus the site collection root, plus the Search Service Application. • So if you adda new result type to some random web, the sub webs under it won’t inherit that type unless you are working in the site collection root web
Display Templates • Display templates contain the following characteristics: • They define the visual layout of a Result Type • A template is really just HTML • You can edit it with ANY HTML designer you want – DreamWeaver, SharePoint Designer, Visual Studio, Notepad – doesn’t matter • You add placeholders to your HTML file where managed properties should be emitted • It gives you a real WYSIWIG experience when designing templates • A set of display templates is included OOB; you can find them in the Master Pages/Display Templates/Search folder • Site collection admins can upload new display templates.
Result Type with Display Template Example • Here’s an example from one of the Hands On Labs that demonstrates building a custom result type and display template for .TXT file search results:
Result Types demo Steve Peschka Sr. Principal Consultant Microsoft Corporation
Search Refinement • There are two different modes for the refiner web part: search results and faceted navigation • With search results the refinement data works essentially the same as SharePoint 2010 • With faceted navigation it uses a term from the term store to filter what kind of data should be displayed (explained on next slide) • Refinement is different with SharePoint 15 in that you can define display templates to use for rendering different kinds of refinements • In SharePoint 2010 you had to write your own custom refiner
Faceted Navigation with Search Refiners • With Faceted Navigation, it is used in conjunction with term sets that are used for navigation • With each term you select which managed properties should be used as refiners with that term • Within the managed property you need to configure it as “Refinable” • Example: • You have term store terms Camera and Laptop • You have managed properties Megapixel Count, Colorand Manufacturer • For Cameraterm, you add refiners for Megapixel Countand Manufacturer • For Laptopterm you add refiners for Colorand Manufacturer • Another Example: • Department is the term store term, Customers and Projects could be refiners
Query Suggestions • Query suggestions take a big leap forward in usability. It improves on the experience in SharePoint 2010 as follows: • Your personal SharePoint activity factors into the query suggestions, i.e. you have a personal query log • It includes weighting based on sites that you have previously visited • It uses the most frequent queries across all users that “match” the search terms • The behavior of the query suggestions turns into more of a “browse and find” kind of experience • You can also add inclusion and exclusion lists for suggestions via the SSA admin pages
Query Suggestion Types • There are two types of query suggestions – what you see when you are entering a query, and what you see when you get results • When entering a query you will see two types of suggestions: • A list of items you have clicked on before from your personal query log • A list of items that others are typing for their queries • When you get query results back, you will get another set of suggestions • They are a list of links that you have clicked through at least twice before and match your search criteria
Query Suggestion Examples • Here are some examples of how query suggestions might look: • Before the Query Suggestion • Above are items based on what other users have queried and found • Bottom 3 items are ones you clicked before • After the Query Suggestion • Top 3 items are ones you clicked before
Thumbnail Previews • The new Office Web Apps is the engine for thumbnail previews in SharePoint 15 • The BIG WIN HERE – you can now browse through the entire document in the preview • See all pages, see animations, zoom in, scroll through the entire document • The point of this is to allow users to find the exact item they’re looking for right in search results – no more clicking a result, hitting the back button, and on and on until they find the one they’re looking for • It also addresses the two major shortcomings of thumbnails in SharePoint 2010: • It could only be used with FAST Search • It did NOT work with claims authentication • Since there’s only one search engine in SharePoint 15 you get document previews out of the box • In a different twist, previews only work with claims authentication – it will not work with classic Windows authentication
Summary: New Site Search Admin Tasks • Just to summarize, here are things site admins can do to manage search themselves:
Online Content links: • IT Pro training for SharePoint 2013 http://technet.microsoft.com/en-us/sharepoint/fp123606 • SharePoint 2013 enterprise search Module:http://technet.microsoft.com/en-us/sharepoint/fp123606