shard3가 있는 서버에 문제가 있는 상태에서 solr query를 요청하는 경우 "no servers hosting shard: shard3" 오류가 발생하는 경우는 URL(https://www.gooper.com/ss/index.php?mid=bigdata&category=2780&document_srl=3567)을 참고하여 조치해준다.

------------------오류내용-------------

2018-01-03 09:23:38.147 INFO  (qtp1791930789-17) [c:gc s:shard2 r:core_node4 x:gc_shard2_replica2] o.a.s.c.S.Request [gc_shard2_replica2]  webapp=/solr path=/select params={q=*:*&indent=on&wt=json&_=1514971412840} status=503 QTime=1
2018-01-03 09:23:38.354 ERROR (qtp1791930789-14) [c:gc s:shard2 r:core_node4 x:gc_shard2_replica2] o.a.s.h.RequestHandlerBase org.apache.solr.common.SolrException: no servers hosting shard: shard3
        at org.apache.solr.handler.component.HttpShardHandler.prepDistributed(HttpShardHandler.java:447)
        at org.apache.solr.handler.component.SearchHandler.getAndPrepShardHandler(SearchHandler.java:226)
        at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:264)
        at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:154)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:2089)
        at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:652)
        at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:459)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:257)
        at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:208)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1160)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1092)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
        at org.eclipse.jetty.server.Server.handle(Server.java:518)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244)
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
        at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
        at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:246)
        at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:156)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
        at java.lang.Thread.run(Thread.java:748)