<lib dir="../../../contrib/extraction/lib" regex=".*\.jar" />

<dataDir>${solr.data.dir:E:/solr/example/solr/collection1/data}</dataDir>

 <codecFactory class="solr.SchemaCodecFactory"/>

 <indexConfig>    <!-- Maximum time to wait for a write lock (ms) for an IndexWriter. Default: 1000 -->    <!-- <writeLockTimeout>1000</writeLockTimeout>  -->    <!-- indexWriter生成索引时使用的最大线程数 Default in Solr/Lucene is 8. -->    <maxIndexingThreads>8</maxIndexingThreads>    <!-- 通过将很多 Lucene 内部文件整合到一个文件来减少使用中的文件的数量。    这可有助于减少 Solr 使用的文件句柄数目，代价是降低了性能。    除非是应用程序用完了文件句柄，否则 false 的默认值应该就已经足够     Default in Lucene is "true". Default in Solr is "false" (since 3.6) -->   <useCompoundFile>false</useCompoundFile>    <!-- ramBufferSizeMB maxBufferedDocs 在添加或删除文档时，为了减少频繁的更些索引,    Solr会选缓存在内存中,当内存中的文件大于设置的值,才会更新到索引库。    较大的值可使索引时间变快但会牺牲较多的内存。    如两个值同时设置,满足一个就会进行刷新索引.  -->    <ramBufferSizeMB>100</ramBufferSizeMB>    <maxBufferedDocs>1000</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">10</int>          <int name="segmentsPerTier">10</int>        </mergePolicy>      -->           <!-- Merge Factor决定低水平的 Lucene 段被合并的频率。    较小的值（最小为 2）使用的内存较少但导致的索引时间也更慢。    较大的值可使索引时间变快但会牺牲较多的内存。-->    <mergeFactor>10</mergeFactor>    <!-- Expert: Merge Scheduler         The Merge Scheduler in Lucene controls how merges are         performed.  The ConcurrentMergeScheduler (Lucene 2.3 default)         can perform merges in the background using separate threads.         The SerialMergeScheduler (Lucene 2.2 default) does not.     -->    <!--        <mergeScheduler class="org.apache.lucene.index.ConcurrentMergeScheduler"/>       -->    <!-- LockFactory 配置锁         single = SingleInstanceLockFactory - 在只读索引或是没有其它进程修改索引时使用.         native = NativeFSLockFactory - 在只读索引或是没有其它进程修改索引时使用.         simple = SimpleFSLockFactory  - 使用一个文本文件锁定索引.         Defaults: ‘native‘ is default for Solr3.6 and later, otherwise                   ‘simple‘ is the default -->    <lockType>${solr.lock.type:native}</lockType>    <!-- unlockOnStartup 告知 Solr 忽略在多线程环境中用来保护索引的锁定机制。        在某些情况下，索引可能会由于不正确的关机或其他错误而一直处于锁定，        这就妨碍了添加和更新。将其设置为 true 可以禁用启动锁定，进而允许进行添加和更新。        Default is "false". This is not needed if lock type is ‘single‘ -->        <unlockOnStartup>false</unlockOnStartup>              <!-- Expert: Controls how often Lucene loads terms into memory         Default is 128 and is likely good for most everyone.      -->    <!-- <termIndexInterval>128</termIndexInterval> -->    <!-- If true, IndexReaders will be opened/reopened from the IndexWriter         instead of from the Directory. Hosts in a master/slave setup         should have this set to false while those in a SolrCloud         cluster need to be set to true. Default: true      -->    <!--     <nrtMode>true</nrtMode>      -->    <!-- Commit Deletion Policy         Custom deletion policies can be specified here. The class must         implement org.apache.lucene.index.IndexDeletionPolicy.         The default Solr IndexDeletionPolicy implementation supports         deleting index commit points on number of commits, age of         commit point and optimized status.                  The latest commit point should always be preserved regardless         of the criteria.    -->    <!--     <deletionPolicy class="solr.SolrDeletionPolicy">    -->      <!-- The number of commit points to be kept -->      <!-- <str name="maxCommitsToKeep">1</str> -->      <!-- The number of optimized commit points to be kept -->      <!-- <str name="maxOptimizedCommitsToKeep">0</str> -->      <!--          Delete all commit points once they have reached the given age.          Supports DateMathParser syntax e.g.        -->      <!--         <str name="maxCommitAge">30MINUTES</str>         <str name="maxCommitAge">1DAY</str>      -->    <!--     </deletionPolicy>    -->    <!-- Lucene Infostream                To aid in advanced debugging, Lucene provides an "InfoStream"         of detailed information when indexing.         Setting the value to true will instruct the underlying Lucene         IndexWriter to write its info stream to solr‘s log. By default,         this is enabled here, and controlled through log4j.properties.      -->     <infoStream>true</infoStream>        <!--        Use true to enable this safety check, which can help        reduce the risk of propagating index corruption from older segments         into new ones, at the expense of slower merging.    -->     <checkIntegrityAtMerge>false</checkIntegrityAtMerge>  </indexConfig>

<!--updateHandler： 这个更新处理器主要涉及底层的关于如何更新处理内部的信息。 --> <updateHandler class="solr.DirectUpdateHandler2">    <updateLog>      <str name="dir">${solr.ulog.dir:}</str>    </updateLog>    <autoCommit>          <maxDocs>10000</maxDocs> <!-- 触发自动提交前最多可以等待提交的文档数量  -->         <maxTime>86000</maxTime> <!-- 在添加了一个文档之后，触发自动提交之前所最大的等待时间-->     </autoCommit>         <!--一个postCommit的事件被触发当每一个提交之后  -->    <listener event="postCommit" class="solr.RunExecutableListener">         <str name="exe">snapshooter</str>   <!-- exe--可执行的文件类型   -->      <str name="dir">solr/bin</str>   <!--dir--可以用该目录做为当前的工作目录。默认为"."    -->      <bool name="wait">true</bool>   <!-- wait--调用线程要等到可执行的返回值   -->       <arr name="args"> <str>arg1</str> <str>arg2</str> </arr>  <!--args--传递给程序的参数 默认nothing-->      <arr name="env"> <str>MYVAR=val1</str> </arr>  <!-- env 环境变量的设置 默认nothing    -->            </listener>        <autoSoftCommit>        <maxTime>${solr.autoSoftCommit.maxTime:-1}</maxTime>      </autoSoftCommit> </updateHandler>

<!--    Let the dispatch filter handler /select?qt=XXX    handleSelect=true will use consistent error handling for /select and /update    handleSelect=false will use solr1.1 style error formatting    -->  <requestDispatcher handleSelect="true" >    <!--Make sure your system has some authentication before enabling remote streaming!  -->    <requestParsers enableRemoteStreaming="false" multipartUploadLimitInKB="2048" formdataUploadLimitInKB="2048" />  ...