question: public MiniSolrCloudCluster ( int numServers , String hostContext , File solrXml , SortedMap < ServletHolder , String > extraServlets , SortedMap < Class , String > extraRequestFilters ) throws Exception { testDir = Files . createTempDir ( ) ; String zkDir = testDir . getAbsolutePath ( ) + File . separator + "zookeeper/server1/data" ; zkServer = new ZkTestServer ( zkDir ) ; zkServer . run ( ) ; SolrZkClient zkClient = null ; InputStream is = null ; try { zkClient = new SolrZkClient ( zkServer . getZkHost ( ) , AbstractZkTestCase . TIMEOUT , 45000 , null ) ; zkClient . makePath ( "/solr" , false , true ) ; is = new FileInputStream ( solrXml ) ; zkClient . create ( "/solr/solr.xml" , IOUtils . toByteArray ( is ) , ZooDefs . Ids . OPEN_ACL_UNSAFE , CreateMode . PERSISTENT , true ) ; } finally { IOUtils . closeQuietly ( is ) ; if ( zkClient != null ) zkClient . close ( ) ; } System . setProperty ( "solr.solrxml.location" , "zookeeper" ) ; System . setProperty ( "zkHost" , zkServer . getZkAddress ( ) ) ; jettys = new LinkedList < JettySolrRunner > ( ) ; for ( int i = 0 ; i < numServers ; ++ i ) { startJettySolrRunner ( hostContext , extraServlets , extraRequestFilters ) ; } }
target:  "Mini" SolrCloud cluster to be used for testing