I am new to Solr and already have Lucene indexes that I want to serve through SolrCloud.
I have SolrCloud setup with external zookeeper and 2 Solr Instances - solr1 and solr2registered with this zookeeper. On solr1 I add a symlink to my existing Lucene indexes. (and not on solr2) I create the collection with following command​ $ bin/solr create_collection -c sharedCollection -d /conf -shards 2 -p 8983 Connecting to ZooKeeper at 172.17.0.2:2181 ... Uploading /conf for config sharedCollection to ZooKeeper at 172.17.0.2:2181 Creating new collection 'sharedCollection' using command: http://localhost:8983/solr/admin/collections?action=CREATE&name=sharedCollection&numShards=2&replicationFactor=1&maxShardsPerNode=1&collection.configName=sharedCollection { "responseHeader":{ "status":0, "QTime":9905}, "success":{ "172.17.0.4:8983_solr":{ "responseHeader":{ "status":0, "QTime":7680}, "core":"sharedCollection_shard1_replica1"}, "172.17.0.3:8983_solr":{ "responseHeader":{ "status":0, "QTime":7945}, "core":"sharedCollection_shard2_replica1"}}} Now when I go to solr1 Admin Page on Browser, I see that solr1 has all the documents and solr2 has none. Then I try to split shard using http://192.168.99.100:8983/solr/admin/collections?action=SPLITSHARD&collection=sharedCollection&shard=shard1 <?xml version="1.0" encoding="UTF-8"?> <response> <lst name="responseHeader"> <int name="status">500</int> <int name="QTime">3525</int> </lst> <lst name="failure"> <str name="172.17.0.4:8983_solr">org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException:Error from server at http://172.17.0.4:8983/solr: Error CREATEing SolrCore 'sharedCollection_shard1_0_replica1': Unable to create core [sharedCollection_shard1_0_replica1] Caused by: Lock held by this virtual machine: /external_index/index/write.lock</str> </lst> <str name="Operation splitshard caused exception:">org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: ADDREPLICA failed to create replica</str> <lst name="exception"> <str name="msg">ADDREPLICA failed to create replica</str> <int name="rspCode">500</int> </lst> <lst name="error"> <lst name="metadata"> <str name="error-class">org.apache.solr.common.SolrException</str> <str name="root-error-class">org.apache.solr.common.SolrException</str> </lst> <str name="msg">ADDREPLICA failed to create replica</str> <str name="trace">org.apache.solr.common.SolrException: ADDREPLICA failed to create replica at org.apache.solr.handler.admin.CollectionsHandler.handleResponse(CollectionsHandler.java:266) at org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:197) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:155) at org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:658) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:441) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:229) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:184) at org.eclipse.jetty.servlet.ServletHandler$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:745) </str> <int name="code">500</int> </lst> What I want to do - I want to split these Lucene indexes into different shards on different nodes so that there is replication of indexes. - But all the data still resides on solr1 that is hosting shard1 and there are no documents on solr2 that hosts shard2. Can anyone please suggest how to achieve replication?​
