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https://issues.apache.org/jira/browse/SOLR-4734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13658431#comment-13658431
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Shawn Heisey commented on SOLR-4734:
------------------------------------
One other thing in addition to Mark's note - the step where you link the config
with zkcli isn't necessary, and at that point, the collection doesn't exist, so
it can't be linked.
The best-case scenario is that the linkconfig step isn't doing anything at all.
The worst-case scenario is that linkconfig puts something in zookeeper that
prevents the CREATE from working properly.
The CREATE action takes care of linking the config to the collection, via the
collection.configName parameter.
> Can not create collection via collections API on empty solr
> -----------------------------------------------------------
>
> Key: SOLR-4734
> URL: https://issues.apache.org/jira/browse/SOLR-4734
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 4.3, 4.2.1
> Environment: Linux 64bit on 3.2.0-33-generic kernel
> Solr: 4.2.1
> ZooKeeper: 3.4.5
> Tomcat 7.0.27
> Reporter: Alexander Eibner
> Assignee: Mark Miller
> Fix For: 5.0, 4.4
>
> Attachments: config-logs.zip
>
>
> The following setup and steps always lead to the same error:
> app01: ZooKeeper
> app02: ZooKeeper, Solr (in Tomcat)
> app03: ZooKeeper, Solr (in Tomcat)
> *) Start ZooKeeper as ensemble on all machines.
> *) Start tomcat on app02/app03
> {code:javascript|title=clusterstate.json}
> null
> cZxid = 0x100000014
> ctime = Thu Apr 18 10:59:24 CEST 2013
> mZxid = 0x100000014
> mtime = Thu Apr 18 10:59:24 CEST 2013
> pZxid = 0x100000014
> cversion = 0
> dataVersion = 0
> aclVersion = 0
> ephemeralOwner = 0x0
> dataLength = 0
> numChildren = 0
> {code}
> *) Upload the configuration (on app02) for the collection via the following
> command:
> {noformat}
> zkcli.sh -cmd upconfig --zkhost app01:4181,app02:4181,app03:4181
> --confdir config/solr/storage/conf/ --confname storage-conf
> {noformat}
> *) Linking the configuration (on app02) via the following command:
> {noformat}
> zkcli.sh -cmd linkconfig --collection storage --confname storage-conf
> --zkhost app01:4181,app02:4181,app03:4181
> {noformat}
> *) Create Collection via:
> {noformat}
> http://app02/solr/admin/collections?action=CREATE&name=storage&numShards=1&replicationFactor=2&collection.configName=storage-conf
> {noformat}
> {code:javascript|title=clusterstate.json}
> {"storage":{
> "shards":{"shard1":{
> "range":"80000000-7fffffff",
> "state":"active",
> "replicas":{
> "app02:9985_solr_storage_shard1_replica2":{
> "shard":"shard1",
> "state":"down",
> "core":"storage_shard1_replica2",
> "collection":"storage",
> "node_name":"app02:9985_solr",
> "base_url":"http://app02:9985/solr"},
> "app03:9985_solr_storage_shard1_replica1":{
> "shard":"shard1",
> "state":"down",
> "core":"storage_shard1_replica1",
> "collection":"storage",
> "node_name":"app03:9985_solr",
> "base_url":"http://app03:9985/solr"}}}},
> "router":"compositeId"}}
> cZxid = 0x100000014
> ctime = Thu Apr 18 10:59:24 CEST 2013
> mZxid = 0x100000047
> mtime = Thu Apr 18 11:04:06 CEST 2013
> pZxid = 0x100000014
> cversion = 0
> dataVersion = 2
> aclVersion = 0
> ephemeralOwner = 0x0
> dataLength = 847
> numChildren = 0
> {code}
> This creates the replication of the shard on app02 and app03, but neither of
> them is marked as leader, both are marked as DOWN.
> And after wards I can not access the collection.
> In the browser I get:
> {noformat}
> "SEVERE: org.apache.solr.common.SolrException: no servers hosting shard:"
> {noformat}
> The following stacktrace in the logs:
> {code}
> Apr 18, 2013 11:04:05 AM org.apache.solr.common.SolrException log
> SEVERE: org.apache.solr.common.SolrException: Error CREATEing SolrCore
> 'storage_shard1_replica2':
> at
> org.apache.solr.handler.admin.CoreAdminHandler.handleCreateAction(CoreAdminHandler.java:483)
> at
> org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:140)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
> at
> org.apache.solr.servlet.SolrDispatchFilter.handleAdminRequest(SolrDispatchFilter.java:591)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:192)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:141)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
> at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
> at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
> Caused by: org.apache.solr.common.cloud.ZooKeeperException:
> at
> org.apache.solr.core.CoreContainer.registerInZk(CoreContainer.java:931)
> at
> org.apache.solr.core.CoreContainer.registerCore(CoreContainer.java:892)
> at org.apache.solr.core.CoreContainer.register(CoreContainer.java:841)
> at
> org.apache.solr.handler.admin.CoreAdminHandler.handleCreateAction(CoreAdminHandler.java:479)
> ... 19 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.solr.cloud.ShardLeaderElectionContext.runLeaderProcess(ElectionContext.java:190)
> at
> org.apache.solr.cloud.LeaderElector.runIamLeaderProcess(LeaderElector.java:156)
> at
> org.apache.solr.cloud.LeaderElector.checkIfIamLeader(LeaderElector.java:100)
> at
> org.apache.solr.cloud.LeaderElector.joinElection(LeaderElector.java:266)
> at
> org.apache.solr.cloud.ZkController.joinElection(ZkController.java:935)
> at org.apache.solr.cloud.ZkController.register(ZkController.java:761)
> at org.apache.solr.cloud.ZkController.register(ZkController.java:727)
> at
> org.apache.solr.core.CoreContainer.registerInZk(CoreContainer.java:908)
> ... 22 more
> {code}
> I have attached a minimal set of configuration files which are needed to
> replicate this error, also containing the log files for the commands I have
> run in the order above.
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