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this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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    http://www.apache.org/licenses/LICENSE-2.0

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<!–

For more details about configurations options that may appear in
this file, see http://wiki.apache.org/solr/SolrConfigXml.

–> <config>

<!-- In all configuration below, a prefix of "solr." for class names
     is an alias that causes solr to search appropriate packages,
     including org.apache.solr.(search|update|request|core|analysis)

     You may also specify a fully qualified Java classname if you
     have your own custom plugins.
  -->

<!-- Controls what version of Lucene various components of Solr
     adhere to.  Generally, you want to use the latest version to
     get all bug fixes and improvements. It is highly recommended
     that you fully re-index after changing this setting as it can
     affect both how text is indexed and queried.
-->
<luceneMatchVersion>LUCENE_41</luceneMatchVersion>

<!-- <lib/> directives can be used to instruct Solr to load an Jars
     identified and use them to resolve any "plugins" specified in
     your solrconfig.xml or schema.xml (ie: Analyzers, Request
     Handlers, etc...).

     All directories and paths are resolved relative to the
     instanceDir.

     Please note that <lib/> directives are processed in the order
     that they appear in your solrconfig.xml file, and are "stacked"
     on top of each other when building a ClassLoader - so if you have
     plugin jars with dependencies on other jars, the "lower level"
     dependency jars should be loaded first.

     If a "./lib" directory exists in your instanceDir, all files
     found in it are included as if you had used the following
     syntax...

            <lib dir="./lib" />
  -->
<dataDir>${solr.data.dir:}</dataDir>

<!-- The DirectoryFactory to use for indexes.

     solr.StandardDirectoryFactory is filesystem
     based and tries to pick the best implementation for the current
     JVM and platform.  solr.NRTCachingDirectoryFactory, the default,
     wraps solr.StandardDirectoryFactory and caches small files in memory
     for better NRT performance.

     One can force a particular implementation via solr.MMapDirectoryFactory,
     solr.NIOFSDirectoryFactory, or solr.SimpleFSDirectoryFactory.

     solr.RAMDirectoryFactory is memory based, not
     persistent, and doesn't work with replication.
  -->
<directoryFactory name="DirectoryFactory"
                  class="${solr.directoryFactory:solr.NRTCachingDirectoryFactory}"/>

<!-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     Index Config - These settings control low-level behavior of indexing
     Most example settings here show the default value, but are commented
     out, to more easily see where customizations have been made.

     Note: This replaces <indexDefaults> and <mainIndex> from older versions
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->
<indexConfig>
  <!-- maxFieldLength was removed in 4.0. To get similar behavior, include a
       LimitTokenCountFilterFactory in your fieldType definition. E.g.
   <filter class="solr.LimitTokenCountFilterFactory" maxTokenCount="10000"/>
  -->
  <!-- Maximum time to wait for a write lock (ms) for an IndexWriter. Default: 1000 -->
  <!-- <writeLockTimeout>1000</writeLockTimeout>  -->

  <!-- The maximum number of simultaneous threads that may be
       indexing documents at once in IndexWriter; if more than this
       many threads arrive they will wait for others to finish.
       Default in Solr/Lucene is 8. -->
  <maxIndexingThreads>2</maxIndexingThreads>

  <useCompoundFile>true</useCompoundFile>

  <!-- ramBufferSizeMB sets the amount of RAM that may be used by Lucene
       indexing for buffering added documents and deletions before they are
       flushed to the Directory.
       maxBufferedDocs sets a limit on the number of documents buffered
       before flushing.
       If both ramBufferSizeMB and maxBufferedDocs is set, then
       Lucene will flush based on whichever limit is hit first.  -->
  <ramBufferSizeMB>20</ramBufferSizeMB> -->
  <maxBufferedDocs>10000</maxBufferedDocs>

  <!-- Expert: Merge Policy
       The Merge Policy in Lucene controls how merging of segments is done.
       The default since Solr/Lucene 3.3 is TieredMergePolicy.
       The default since Lucene 2.3 was the LogByteSizeMergePolicy,
       Even older versions of Lucene used LogDocMergePolicy.
    -->
  <mergePolicy class="org.apache.lucene.index.TieredMergePolicy">
    <int name="maxMergeAtOnce">4</int>
    <int name="segmentsPerTier">4</int>
  </mergePolicy>

  <unlockOnStartup>true</unlockOnStartup>

</indexConfig>

<updateHandler class="solr.DirectUpdateHandler2">

  <!-- Enables a transaction log, used for real-time get, durability, and
       and solr cloud replica recovery.  The log can grow as big as
       uncommitted changes to the index, so use of a hard autoCommit
       is recommended (see below).
       "dir" - the target directory for transaction logs, defaults to the
              solr data directory.  -->
  <updateLog>
    <str name="dir">${solr.ulog.dir:}</str>
  </updateLog>

   <autoCommit>
     <maxTime>15000</maxTime>
     <openSearcher>false</openSearcher>
   </autoCommit>

   <autoSoftCommit>
     <maxTime>5000</maxTime>
   </autoSoftCommit>
</updateHandler>

<query>
  <maxBooleanClauses>1024</maxBooleanClauses>

  <!-- Solr Internal Query Caches

       There are two implementations of cache available for Solr,
       LRUCache, based on a synchronized LinkedHashMap, and
       FastLRUCache, based on a ConcurrentHashMap.

       FastLRUCache has faster gets and slower puts in single
       threaded operation and thus is generally faster than LRUCache
       when the hit ratio of the cache is high (> 75%), and may be
       faster under other scenarios on multi-cpu systems.
  -->

  <!-- Filter Cache

       Cache used by SolrIndexSearcher for filters (DocSets),
       unordered sets of *all* documents that match a query.  When a
       new searcher is opened, its caches may be prepopulated or
       "autowarmed" using data from caches in the old searcher.
       autowarmCount is the number of items to prepopulate.  For
       LRUCache, the autowarmed items will be the most recently
       accessed items.

       Parameters:
         class - the SolrCache implementation LRUCache or
             (LRUCache or FastLRUCache)
         size - the maximum number of entries in the cache
         initialSize - the initial capacity (number of entries) of
             the cache.  (see java.util.HashMap)
         autowarmCount - the number of entries to prepopulate from
             and old cache.
    -->
  <filterCache class="solr.FastLRUCache"
               size="512"
               initialSize="512"
               autowarmCount="0"/>

  <!-- Query Result Cache

       Caches results of searches - ordered lists of document ids
       (DocList) based on a query, a sort, and the range of documents requested.
    -->
  <queryResultCache class="solr.LRUCache"
                   size="512"
                   initialSize="512"
                   autowarmCount="0"/>

  <!-- Document Cache

       Caches Lucene Document objects (the stored fields for each
       document).  Since Lucene internal document ids are transient,
       this cache will not be autowarmed.
    -->
  <documentCache class="solr.LRUCache"
                 size="512"
                 initialSize="512"
                 autowarmCount="0"/>

  <!-- Lazy Field Loading

       If true, stored fields that are not requested will be loaded
       lazily.  This can result in a significant speed improvement
       if the usual case is to not load all stored fields,
       especially if the skipped fields are large compressed text
       fields.
  -->
  <enableLazyFieldLoading>true</enableLazyFieldLoading>

 <!-- Use Filter For Sorted Query

      A possible optimization that attempts to use a filter to
      satisfy a search.  If the requested sort does not include
      score, then the filterCache will be checked for a filter
      matching the query. If found, the filter will be used as the
      source of document ids, and then the sort will be applied to
      that.

      For most situations, this will not be useful unless you
      frequently get the same search repeatedly with different sort
      options, and none of them ever use "score"
   -->
 <!--
    <useFilterForSortedQuery>true</useFilterForSortedQuery>
   -->

 <!-- Result Window Size

      An optimization for use with the queryResultCache.  When a search
      is requested, a superset of the requested number of document ids
      are collected.  For example, if a search for a particular query
      requests matching documents 10 through 19, and queryWindowSize is 50,
      then documents 0 through 49 will be collected and cached.  Any further
      requests in that range can be satisfied via the cache.
   -->
 <queryResultWindowSize>20</queryResultWindowSize>

 <!-- Maximum number of documents to cache for any entry in the
      queryResultCache.
   -->
 <queryResultMaxDocsCached>200</queryResultMaxDocsCached>

 <!-- Query Related Event Listeners

      Various IndexSearcher related events can trigger Listeners to
      take actions.

      newSearcher - fired whenever a new searcher is being prepared
      and there is a current searcher handling requests (aka
      registered).  It can be used to prime certain caches to
      prevent long request times for certain requests.

      firstSearcher - fired whenever a new searcher is being
      prepared but there is no current registered searcher to handle
      requests or to gain autowarming data from.

   -->

  <!-- Use Cold Searcher

       If a search request comes in and there is no current
       registered searcher, then immediately register the still
       warming searcher and use it.  If "false" then all requests
       will block until the first searcher is done warming.
    -->
  <useColdSearcher>false</useColdSearcher>

  <!-- Max Warming Searchers

       Maximum number of searchers that may be warming in the
       background concurrently.  An error is returned if this limit
       is exceeded.

       Recommend values of 1-2 for read-only slaves, higher for
       masters w/o cache warming.
    -->
  <maxWarmingSearchers>5</maxWarmingSearchers>

</query>

<!-- Request Dispatcher

     This section contains instructions for how the SolrDispatchFilter
     should behave when processing requests for this SolrCore.

     handleSelect is a legacy option that affects the behavior of requests
     such as /select?qt=XXX

     handleSelect="true" will cause the SolrDispatchFilter to process
     the request and dispatch the query to a handler specified by the
     "qt" param, assuming "/select" isn't already registered.

     handleSelect="false" will cause the SolrDispatchFilter to
     ignore "/select" requests, resulting in a 404 unless a handler
     is explicitly registered with the name "/select"

     handleSelect="true" is not recommended for new users, but is the default
     for backwards compatibility
  -->
<requestDispatcher handleSelect="false" >
  <!-- Request Parsing

       These settings indicate how Solr Requests may be parsed, and
       what restrictions may be placed on the ContentStreams from
       those requests

       enableRemoteStreaming - enables use of the stream.file
       and stream.url parameters for specifying remote streams.

       multipartUploadLimitInKB - specifies the max size (in KiB) of
       Multipart File Uploads that Solr will allow in a Request.

       formdataUploadLimitInKB - specifies the max size (in KiB) of
       form data (application/x-www-form-urlencoded) sent via
       POST. You can use POST to pass request parameters not
       fitting into the URL.

       *** WARNING ***
       The settings below authorize Solr to fetch remote files, You
       should make sure your system has some authentication before
       using enableRemoteStreaming="true"

    -->

  <!-- HTTP Caching

       Set HTTP caching related parameters (for proxy caches and clients).

       The options below instruct Solr not to output any HTTP Caching
       related headers
    -->
  <httpCaching never304="true" />
  <!-- If you include a <cacheControl> directive, it will be used to
       generate a Cache-Control header (as well as an Expires header
       if the value contains "max-age=")

       By default, no Cache-Control header is generated.

       You can use the <cacheControl> option even if you have set
       never304="true"
    -->
  <!--
     <httpCaching never304="true" >
       <cacheControl>max-age=30, public</cacheControl>
     </httpCaching>
    -->
  <!-- To enable Solr to respond with automatically generated HTTP
       Caching headers, and to response to Cache Validation requests
       correctly, set the value of never304="false"

       This will cause Solr to generate Last-Modified and ETag
       headers based on the properties of the Index.

       The following options can also be specified to affect the
       values of these headers...

       lastModFrom - the default value is "openTime" which means the
       Last-Modified value (and validation against If-Modified-Since
       requests) will all be relative to when the current Searcher
       was opened.  You can change it to lastModFrom="dirLastMod" if
       you want the value to exactly correspond to when the physical
       index was last modified.

       etagSeed="..." is an option you can change to force the ETag
       header (and validation against If-None-Match requests) to be
       different even if the index has not changed (ie: when making
       significant changes to your config file)

       (lastModifiedFrom and etagSeed are both ignored if you use
       the never304="true" option)
    -->
  <!--
     <httpCaching lastModifiedFrom="openTime"
                  etagSeed="Solr">
       <cacheControl>max-age=30, public</cacheControl>
     </httpCaching>
    -->
</requestDispatcher>

<!-- Request Handlers

     http://wiki.apache.org/solr/SolrRequestHandler

     Incoming queries will be dispatched to a specific handler by name
     based on the path specified in the request.

     Legacy behavior: If the request path uses "/select" but no Request
     Handler has that name, and if handleSelect="true" has been specified in
     the requestDispatcher, then the Request Handler is dispatched based on
     the qt parameter.  Handlers without a leading '/' are accessed this way
     like so: http://host/app/[core/]select?qt=name  If no qt is
     given, then the requestHandler that declares default="true" will be
     used or the one named "standard".

     If a Request Handler is declared with startup="lazy", then it will
     not be initialized until the first request that uses it.

  -->
<!-- SearchHandler

     http://wiki.apache.org/solr/SearchHandler

     For processing Search Queries, the primary Request Handler
     provided with Solr is "SearchHandler" It delegates to a sequent
     of SearchComponents (see below) and supports distributed
     queries across multiple shards
  -->
<requestHandler name="/select" class="solr.SearchHandler">
  <lst name="defaults">
    <str name="spellcheck.dictionary">default</str>
    <str name="spellcheck.extendedResults">true</str>
    <str name="spellcheck.collate">true</str>
  </lst>
  <arr name="last-components">
    <str>spellcheck</str>
  </arr>
</requestHandler>

<!-- A request handler that returns indented JSON by default -->
<requestHandler name="/query" class="solr.SearchHandler">
   <lst name="defaults">
     <str name="echoParams">explicit</str>
     <str name="wt">json</str>
     <str name="indent">true</str>
     <str name="df">text</str>
   </lst>
   <arr name="last-components">
     <str>spellcheck</str>
   </arr>
</requestHandler>

<!-- realtime get handler, guaranteed to return the latest stored fields of
     any document, without the need to commit or open a new searcher.  The
     current implementation relies on the updateLog feature being enabled. -->
<requestHandler name="/get" class="solr.RealTimeGetHandler">
   <lst name="defaults">
     <str name="omitHeader">true</str>
     <str name="wt">json</str>
     <str name="indent">true</str>
   </lst>
</requestHandler>

<requestHandler name="/update" class="solr.UpdateRequestHandler">
</requestHandler>

<requestHandler name="/update/json" class="solr.JsonUpdateRequestHandler">
      <lst name="defaults">
       <str name="stream.contentType">application/json</str>
     </lst>
</requestHandler>

<requestHandler name="/update/csv" class="solr.CSVRequestHandler">
      <lst name="defaults">
       <str name="stream.contentType">application/csv</str>
     </lst>
</requestHandler>

<requestHandler name="/update/extract"
                startup="lazy"
                class="solr.extraction.ExtractingRequestHandler" >
  <lst name="defaults">
    <str name="lowernames">true</str>
    <str name="uprefix">ignored_</str>

    <!-- capture link hrefs but ignore div attributes -->
    <str name="captureAttr">true</str>
    <str name="fmap.a">links</str>
    <str name="fmap.div">ignored_</str>
  </lst>
</requestHandler>

<requestHandler name="/analysis/field"
                startup="lazy"
                class="solr.FieldAnalysisRequestHandler" />

<requestHandler name="/analysis/document"
                class="solr.DocumentAnalysisRequestHandler"
                startup="lazy" />

<!-- ping/healthcheck -->
<requestHandler name="/admin/ping" class="solr.PingRequestHandler">
  <lst name="invariants">
    <str name="q">solrpingquery</str>
  </lst>
  <lst name="defaults">
    <str name="echoParams">all</str>
  </lst>
</requestHandler>

<requestHandler name="/debug/dump" class="solr.DumpRequestHandler" >
  <lst name="defaults">
   <str name="echoParams">explicit</str>
   <str name="echoHandler">true</str>
  </lst>
</requestHandler>

<requestHandler name="/replication" class="solr.ReplicationHandler" >
</requestHandler>

<searchComponent name="spellcheck" class="solr.SpellCheckComponent">

  <str name="queryAnalyzerFieldType">textSpell</str>

  <!-- Multiple "Spell Checkers" can be declared and used by this
       component
    -->
  <lst name="spellchecker">
    <str name="name">default</str>
    <!-- change field to textSpell and use copyField in schema.xml
    to spellcheck multiple fields -->
    <str name="field">textSpell</str>
    <str name="buildOnCommit">true</str>
  </lst>

  <lst name="spellchecker">
    <str name="name">example</str>
    <str name="field">title_text</str>
    <str name="buildOnCommit">true</str>
    <str name="classname">solr.DirectSolrSpellChecker</str>
    <!-- the spellcheck distance measure used, the default is the internal levenshtein -->
    <str name="distanceMeasure">internal</str>
    <!-- minimum accuracy needed to be considered a valid spellcheck suggestion -->
    <float name="accuracy">0.5</float>
    <!-- the maximum #edits we consider when enumerating terms: can be 1 or 2 -->
    <int name="maxEdits">2</int>
    <!-- the minimum shared prefix when enumerating terms -->
    <int name="minPrefix">1</int>
    <!-- maximum number of inspections per result. -->
    <int name="maxInspections">5</int>
    <!-- minimum length of a query term to be considered for correction -->
    <int name="minQueryLength">4</int>
    <!-- maximum threshold of documents a query term can appear to be considered for correction -->
    <float name="maxQueryFrequency">0.01</float>
    <!-- uncomment this to require suggestions to occur in 1% of the documents
         <float name="thresholdTokenFrequency">.01</float>
    -->
  </lst>

  <!-- a spellchecker that can break or combine words.  See "/spell" handler below for usage -->
  <lst name="spellchecker">
    <str name="name">wordbreak</str>
    <str name="classname">solr.WordBreakSolrSpellChecker</str>
    <str name="field">name</str>
    <str name="combineWords">true</str>
    <str name="breakWords">true</str>
    <int name="maxChanges">10</int>
  </lst>
  -->
</searchComponent>

<searchComponent name="tvComponent" class="solr.TermVectorComponent"/>

<searchComponent name="terms" class="solr.TermsComponent"/>

<searchComponent class="solr.HighlightComponent" name="highlight">
  <highlighting>
    <!-- Configure the standard fragmenter -->
    <!-- This could most likely be commented out in the "default" case -->
    <fragmenter name="gap"
                default="true"
                class="solr.highlight.GapFragmenter">
      <lst name="defaults">
        <int name="hl.fragsize">100</int>
      </lst>
    </fragmenter>

    <!-- A regular-expression-based fragmenter
         (for sentence extraction)
      -->
    <fragmenter name="regex"
                class="solr.highlight.RegexFragmenter">
      <lst name="defaults">
        <!-- slightly smaller fragsizes work better because of slop -->
        <int name="hl.fragsize">70</int>
        <!-- allow 50% slop on fragment sizes -->
        <float name="hl.regex.slop">0.5</float>
        <!-- a basic sentence pattern -->
        <str name="hl.regex.pattern">[-\w ,/\n\&quot;&apos;]{20,200}</str>
      </lst>
    </fragmenter>

    <!-- Configure the standard formatter -->
    <formatter name="html"
               default="true"
               class="solr.highlight.HtmlFormatter">
      <lst name="defaults">
        <str name="hl.simple.pre"><![CDATA[<em>]]></str>
        <str name="hl.simple.post"><![CDATA[</em>]]></str>
      </lst>
    </formatter>

    <!-- Configure the standard encoder -->
    <encoder name="html"
             class="solr.highlight.HtmlEncoder" />

    <!-- Configure the standard fragListBuilder -->
    <fragListBuilder name="simple"
                     class="solr.highlight.SimpleFragListBuilder"/>

    <!-- Configure the single fragListBuilder -->
    <fragListBuilder name="single"
                     class="solr.highlight.SingleFragListBuilder"/>

    <!-- Configure the weighted fragListBuilder -->
    <fragListBuilder name="weighted"
                     default="true"
                     class="solr.highlight.WeightedFragListBuilder"/>

    <!-- default tag FragmentsBuilder -->
    <fragmentsBuilder name="default"
                      default="true"
                      class="solr.highlight.ScoreOrderFragmentsBuilder">
      <!--
      <lst name="defaults">
        <str name="hl.multiValuedSeparatorChar">/</str>
      </lst>
      -->
    </fragmentsBuilder>

    <!-- multi-colored tag FragmentsBuilder -->
    <fragmentsBuilder name="colored"
                      class="solr.highlight.ScoreOrderFragmentsBuilder">
      <lst name="defaults">
        <str name="hl.tag.pre"><![CDATA[
             <b style="background:yellow">,<b style="background:lawgreen">,
             <b style="background:aquamarine">,<b style="background:magenta">,
             <b style="background:palegreen">,<b style="background:coral">,
             <b style="background:wheat">,<b style="background:khaki">,
             <b style="background:lime">,<b style="background:deepskyblue">]]></str>
        <str name="hl.tag.post"><![CDATA[</b>]]></str>
      </lst>
    </fragmentsBuilder>

    <boundaryScanner name="default"
                     default="true"
                     class="solr.highlight.SimpleBoundaryScanner">
      <lst name="defaults">
        <str name="hl.bs.maxScan">10</str>
        <str name="hl.bs.chars">.,!? &#9;&#10;&#13;</str>
      </lst>
    </boundaryScanner>

    <boundaryScanner name="breakIterator"
                     class="solr.highlight.BreakIteratorBoundaryScanner">
      <lst name="defaults">
        <!-- type should be one of CHARACTER, WORD(default), LINE and SENTENCE -->
        <str name="hl.bs.type">WORD</str>
        <!-- language and country are used when constructing Locale object.  -->
        <!-- And the Locale object will be used when getting instance of BreakIterator -->
        <str name="hl.bs.language">en</str>
        <str name="hl.bs.country">US</str>
      </lst>
    </boundaryScanner>
  </highlighting>
</searchComponent>

<requestHandler class="solr.MoreLikeThisHandler" name="/mlt">
  <lst name="defaults">
    <str name="mlt.mintf">1</str>
    <str name="mlt.mindf">2</str>
  </lst>
</requestHandler>

<!-- Admin Handlers - This will register all the standard admin RequestHandlers. -->
<requestHandler name="/admin/" class="solr.admin.AdminHandlers" />

</config>