Apache Solr Reference Guide Covering Apache Solr 6.0

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warm a set of explicit queries: static firstSearcher warming in solrconfig.xml The above code comes from a sample solrconfig.xml. A key best practice is to modify these defaults before taking your application to production, but please note: while the sample queries are commented out in the section for the "newSearcher", the sample quer is not commented out for the "firstSearcher" event. There is no point in auto-warming your Index Searcher with the query string "static firstSearcher warming in solrconfig.xml" if that is not relevant to your search application. RequestDispatcher in SolrConfig The requestDispatcher element of solrconfig.xml controls the way the Solr HTTP RequestDispatche r implementation responds to requests. Included are parameters for defining if it should handle /select urls (for Solr 1.1 compatibility), if it will support remote streaming, the maximum size of file uploads and how it will respond to HTTP cache headers in requests. Topics in this section: handleSelect Element requestParsers Element httpCaching Element handleSelect Element handleSelect is for legacy back-compatibility; those new to Solr do not need to change anything about the way this is configured by default. The first configurable item is the handleSelect attribute on the element itself. This attribute can be set to one of two values, either "true" or "false". It governs how Solr responds to requests such as /select?qt=XXX. The default value "false" will ignore requests to /select if a requestHandler is not explicitly registered with the name /select. A value of "true" will route query requests to the parser defined with the qt value. In recent versions of Solr, a /select requestHandler is defined by default, so a value of "false" will work fine. See the section RequestHandlers and SearchComponents in SolrConfig for more information. ... Apache Solr Reference Guide 6.0 456
equestParsers Element The sub-element controls values related to parsing requests. This is an empty XML element that doesn't have any content, only attributes. The attribute enableRemoteStreaming controls whether remote streaming of content is allowed. If set to fal se, streaming will not be allowed. Setting it to true (the default) lets you specify the location of content to be streamed using stream.file or stream.url parameters. If you enable remote streaming, be sure that you have authentication enabled. Otherwise, someone could potentially gain access to your content by accessing arbitrary URLs. It's also a good idea to place Solr behind a firewall to prevent it being accessed from untrusted clients. The attribute multipartUploadLimitInKB sets an upper limit in kilobytes on the size of a document that may be submitted in a multi-part HTTP POST request. The value specified is multiplied by 1024 to determine the size in bytes. The attribute formdataUploadLimitInKB sets a limit in kilobytes on the size of form data (application/x-www-form-urlencoded) submitted in a HTTP POST request, which can be used to pass request parameters that will not fit in a URL. The attribute addHttpRequestToContext can be used to indicate that the original HttpServletRequest ob ject should be included in the context map of the SolrQueryRequest using the key httpRequest. This Http ServletRequest is not used by any Solr component, but may be useful when developing custom plugins. httpCaching Element The element controls HTTP cache control headers. Do not confuse these settings with Solr's internal cache configuration. This element controls caching of HTTP responses as defined by the W3C HTTP specifications. This element allows for three attributes and one sub-element. The attributes of the element control whether a 304 response to a GET request is allowed, and if so, what sort of response it should be. When an HTTP client application issues a GET, it may optionally specify that a 304 response is acceptable if the resource has not been modified since the last time it was fetched. Parameter Description never304 If present with the value true, then a GET request will never respond with a 304 code, even if the requested resource has not been modified. When this attribute is set to true, the next two attributes are ignored. Setting this to true is handy for development, as the 304 response can be confusing when tinkering with Solr responses through a web browser or other client that supports cache headers. lastModFrom This attribute may be set to either openTime (the default) or dirLastMod. The value openTi me indicates that last modification times, as compared to the If-Modified-Since header sent by the client, should be calculated relative to the time the Searcher started. Use dirLastMod if you want times to exactly correspond to when the index was last updated on disk. Apache Solr Reference Guide 6.0 457
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TM Apache Solr Reference Guide Cove
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About This Guide This guide describ
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Getting Started Solr makes it easy
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Start Solr in the Foreground Since
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documents. Do not worry too much ab
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,price Faceted browsing is one of S
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for the simplest keyword searching
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Stop Informational Version Status H
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-noprompt Start Solr and suppress a
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The stop command sends a STOP reque
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$ bin/solr healthcheck -c gettingst
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collection. For example, the follow
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An example of this command with the
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with the fact that DocValues do not
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Accessing the URL http://hostname:8
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For an explanation of the various l
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Java Properties The Java Properties
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The collection-specific UI screens
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This screen also lets you adjust va
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Related Topics Uploading Data with
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Request-handler (qt) Specifies the
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about the core, and a secondary men
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0 13 {!lucene}*:* false _text_ 10
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This information may be useful for
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In the Solr universe, documents are
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The first line in the
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omitNorms If true, omits the norms
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TrieField TrieFloatField TrieIntFie
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Working with Dates Date Formatting
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UTC: http://localhost:8983/solr/my_
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Working with External Files and Pro
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str Stored string value of a field.
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1 one two three version: 1 stored:
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faceting 5 true 7 true 7 add multip
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useDocValuesAsStored If the field h
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Similarity Similarity is a Lucene c
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Multiple Commands in a Single POST
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Add a Dynamic Field Rule The add-dy
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The replace-field-type command repl
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Finally, repeated commands can be s
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81 Apache Solr Reference Guide 6.0
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id ... List Fields GET
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INPUT Path Parameters Key Descripti
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The query parameters can be added t
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Key collection Description The coll
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curl http://localhost:8983/solr/get
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OUTPUT Output Content The output wi
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Handling text properly will make yo
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Retrieving DocValues During Search
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true managed-schema Define an Upda
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Javadocs for update processor facto
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400 7 ERROR: [doc=19F] Error add
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Analyzers An analyzer examines the
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About Tokenizers The
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You configure the tokenizer for a t
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In: "Please, email john.doe@foo.c
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In: "babaloo" Out:"ba", "bab", "b
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Extract simple, capitalized words.
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lement. For example: The foll
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Example: Classic Filter This f
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Tokenizer to Filter: "four"(1), "sc
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In: "the quick brown fox jumped
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name: (string) The name of the norm
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appropriate for English language te
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N-Gram Filter Generates n-gram toke
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In: "cat concatenate catycat" To
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In: "jump jumping jumped" Tokenizer
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In: "To be, or not to be." Token
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enablePositionIncrements: if lucene
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couch,sofa,divan teh => the huge,gi
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useWhitelist: If true, the file def
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Tokenizer to Filter: "XL-4000/ES"(1
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The table below presents examples o
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KeywordRepeatFilterFactory Emits ea
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Using a Tailored ruleset: custom: (
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get the default rules for Germany /
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Language-Specific Factories Thes
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Arguments: language: (required) ste
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Out: "preziden", "preziden", "prezi
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Examples: In: "le chat,
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Example: Indonesian Solr incl
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Japanese Tokenizer Tokenizer for Ja
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In: "tirgiem tirgus" Tokenize
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Polish Solr provides support fo
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Factory class: solr.RussianLightSte
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Spanish Solr includes two stemmers
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Algorithms discussed in this sectio
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Caverphone To use this encoding in
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The " text_general" field type is d
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Indexing and Basic Data Operations
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$ bin/post -h Usage: post -c [OPTI
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The bin/post script currently deleg
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XML Update Commands Commit and Opti
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In general, the JSON update syntax
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if split=/ (i.e., you want your JSO
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curl 'http://localhost:8983/solr/my
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So, if no params are passed, the en
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Path /update/csv Default Parameters
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Topics covered in this section: Key
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defaultField extractOnly extractFor
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EEEE, dd-MMM-yy HH:mm:ss zzz EEE MM
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curl "http://localhost:8983/solr/te
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Configuration Configuring solrconfi
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Datasources can still be specifie
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dateFormat A java.text.SimpleDateFo
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The URLDataSource type accepts thes
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deletedPkQuery deltaImportQuery SQL
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The entity attributes unique to the
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onError By default, the TikaEntityP
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While there are use cases where you
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The HTMLStripTransformer You can us
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The emailids field in the table can
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set Modifier Usage Set or replace t
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$ curl -X POST -H 'Content-Type: ap
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Method MD5Signature Lookup3Signatur
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language identification and a field
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langid.fallbackFields string none n
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1. Copy solr-uima-VERSION.jar (unde
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VALID_ALCHEMYAPI_KEY is your Alch
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Overview of Searching in Solr Solr
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Velocity Search UI Solr includes a
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The table below summarizes Solr's c
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Setting the start parameter to some
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The debug Parameter The debug param
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The echoParams Parameter The echoPa
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The Standard Query Parser's Respons
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Multiple characters (matches zero o
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field. For example, suppose an inde
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Grouping Terms to Form Sub-Queries
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In addition to the common request p
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If the calculations based on the pa
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http://localhost:8983/solr/techprod
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Examples of Queries Submitted to th
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it includes parentheses. For exampl
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dist docfreq(field,val) exists fiel
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max maxdoc min ms norm( field) not
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ecip rord scale sqedist Performs a
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tf top totaltermfreq xor() Term fre
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is equivalent to: q={!type=dismax q
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This parser takes a query that matc
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ds.txt for your collection, and ind
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One way to model this graph as Solr
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With this alternative document mode
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y wrapping all SHOULD clauses in a
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Re-Ranking Query Parser The ReRankQ
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example configuration below, client
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TermsQueryBuilder UserInputQueryB
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The facet.field parameter identifie
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The default value is fc (except for
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The facet.range.hardend parameter i
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Using the " bin/solr -e techproduct
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"price":{ "min":479.95001220703125,
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307 Apache Solr Reference Guide 6.0
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... "start":"2006-01-01T00:00:00Z",
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and exclude those filters when face
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document sample 1 parent 11 Red
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Standard Highlighter The standard h
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hl.usePhraseHighlighter true If set
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hl.maxMultiValuedToExamine integer.
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Related Content HighlightingParamet
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hl.score.b 0.75 Specifies BM25 leng
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Levenshtein metric, which is the sa
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spellcheck Turns on or off SpellChe
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The spellcheck.alternativeTermCount
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1 0 5 0 dell 1 1 6 17 0 u
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Transforming Result Documents Docum
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childFilter - query to filter which
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name lookupImpl dictionaryImpl A sy
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allTermsRequired: Boolean option fo
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This dictionary implementation take
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Example query: http://localhost:898
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solrconfig.xml mySuggester Analyz
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paging, and filtering using common
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Fetching A Large Number of Sorted R
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$ curl '...&rows=10&sort=id+asc&cur
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The psuedo-code for tailing a curso
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group.facet Boolean Determines whet
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The Collapsing query parser and the
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q=foo&fq={!collapse field=ISBN}&exp
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To enable the clustering component
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There were a few clusters discover
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clustering When true, clustering co
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The default language can also be se
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See the section SpatialRecursivePre
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sphere; and sqedist, to calculate t
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maxDistErr worldBounds Defines the
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interface being developed allows an
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The parameters below allow you to c
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0 2 5 3 3 3 3 3 3 3 3 3 Get
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The TermVectorComponent is a search
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Boolean Parameters Description Type
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0.0 3.0 32 0 10.0 22.0 0.3125 0.7
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Additional "Expert" local params ar
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config-file Path to the file that d
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csv json php phps python ruby smile
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text/plain Python Response Writer
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v.layout.enabled v.contentType v.js
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maxDocs maxTime Integer. Defines th
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${solr.ulog.dir:} Real Time Get re
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Page 423 and 424: Parameters Syntax StreamExpression
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Page 427 and 428: worker nodes. It involves sorting a
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Page 475 and 476: RELOAD The RELOAD action loads a ne
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Page 493 and 494: Managed Resources Managed resources
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Solr process PID running on port 89
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_JMX_OPTS property in the include f
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security.json { } "authentication"
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during initialization. The authoriz
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curl --user solr:SolrRocks http://l
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Consult Your Kerberos Admins! Befor
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If you already have a /security.jso
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in/solr -c -z server1:2181,server2:
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st Parameters API, and other APIs w
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curl --user solr:SolrRocks -H 'Cont
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in/solr.in.sh example SOLR_SSL_* co
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working through the previous sectio
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{ "responseHeader":{ "status":0, "Q
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SolrCloud Instances In SolrCloud mo
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authentication from Solr, you need
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The backup command is an asynchrono
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In addition to the logging options
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log4j.appender.file.MaxFileSize=100
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MBean Request Handler The MBean Req
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SolrCloud Example Interactive Start
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startup a SolrCloud cluster using t
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Then at query time, you include the
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http://localhost:8983/solr/gettings
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Each shard serves top-level query r
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Write Side Fault Tolerance SolrClou
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Create the instance Creating the in
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Finally, create your myid files in
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Changing ACL Schemes Example Usages
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When solr wants to create a new zno
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set SOLR_ZK_CREDS_AND_ACLS=-DzkDige
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maxShardsPerNode integer No 1 When
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It's possible to edit multiple attr
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Query Parameters Key Type Required
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Create a Shard Shards can only crea
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The CREATEALIAS action will create
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0 603 0 19 0 67 Delete
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http://localhost:8983/solr/admin/co
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The response will include the statu
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0 5007 0 8 0 1 test2_shard
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Key Type Required Description role
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Cluster Status /admin/collections?a
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} } "127.0.1.1:8900_solr"] Request
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0 9 Examining the clusterstate a
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0 123 success Already leader 19
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-z -zkhost -c -collection -d -con
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... ${solr.data.dir:} ... 3. The
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will explain why the request failed
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The nodes are sorted first and the
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Defining Rules Rules are specified
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Updates and deletes are first writt
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Rely on two storages: an ephemeral
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Target Configuration Here is a typi
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core/cdcr?action=QUEUES: Fetches st
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Output { } "responseHeader": { "sta
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{ } responseHeader={ status=0, QTim
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http://localhost:898 ${TargetZk}
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Legacy Scaling and Distribution Thi
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Limitations to Distributed Search D
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0 8 *:* localhost:8983/solr/core1
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Master and Slave Update Optimizatio
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http://remote_host:port/solr/core
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A commit command is issued on the s
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is a large expense, but not nearly
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Apache Solr Reference Guide 6.0 639
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The Solr Wiki contains a list of cl
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pSolrClient , or CloudSolrClient .
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upload using binary format, which i
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}} 'manufacturedate_dt'=>'2005-10-1
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Solr Glossary Where possible, terms
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Literally, N data about data. Metad
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See also #Inverse document frequenc
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A new graph query parser makes it p
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Upgrading a Solr Cluster This page
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proceeding to upgrade the next node
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