Update 4.0 to 4.1 (4.2.1): No slice servicing hash code

[norman . lenzner]

Hello,

I tried updating our solrcloud from 4.0.0 to 4.1.0. 
So I set up a cloud on my local machine with a standalone zookeeper 
(3.4.5), 3 collections and 6 Solr servers (4.0.0).
I added some documents via SolrJ, and stopped the servers. After that I 
restarted the nodes with the newer version (4.1.0).

After restarting the nodes everything looks fine - all nodes are active,
but when I started to add documents via SolrJ, the following exception 
occured:

org.apache.solr.common.SolrException: No slice servicing hash code 
8330c664 in DocCollection(anschriften)={"shards":{"shard1":{
      "replicas":{
        "<hostname>:8001_solr_anschriften":{
          "shard":"shard1",
          "state":"active",
          "core":"anschriften",
          "collection":"anschriften",
          "node_name":"<hostname>:8001_solr",
          "base_url":"http://<hostname>:8001/solr",
          "leader":"true"},
        "<hostname>:8002_solr_anschriften":{
          "shard":"shard1",
          "state":"active",
          "core":"anschriften",
          "collection":"anschriften",
          "node_name":"<hostname>:8002_solr",
          "base_url":"http://<hostname>:8002/solr"}},
      "state":"active"}}}
        at 
org.apache.solr.common.cloud.HashBasedRouter.hashToSlice(HashBasedRouter.java:52)
        at 
org.apache.solr.common.cloud.HashBasedRouter.getTargetSlice(HashBasedRouter.java:34)
        at 
org.apache.solr.update.processor.DistributedUpdateProcessor.setupRequest(DistributedUpdateProcessor.java:200)
        at 
org.apache.solr.update.processor.DistributedUpdateProcessor.processAdd(DistributedUpdateProcessor.java:339)
        at 
org.apache.solr.update.processor.LogUpdateProcessor.processAdd(LogUpdateProcessorFactory.java:100)
        at 
org.apache.solr.handler.loader.XMLLoader.processUpdate(XMLLoader.java:246)
        at 
org.apache.solr.handler.loader.XMLLoader.load(XMLLoader.java:173)
        at 
org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:92)
        at 
org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:74)
        at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
        at org.apache.solr.core.SolrCore.execute(SolrCore.java:1817)
        at 
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:639)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:345)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:141)
        at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1307)
        at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
        at 
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:560)
        at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1072)
        at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:382)
        at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1006)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
        at 
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
        at 
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
        at org.eclipse.jetty.server.Server.handle(Server.java:365)
        at 
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485)
        at 
org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)
        at 
org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:937)
        at 
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:998)
        at 
org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:948)
        at 
org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
        at 
org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)
        at 
org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
        at java.lang.Thread.run(Unknown Source)

There is only one shard, and it should contain all documents. Do you have 
any idea what's going wrong?

Thanks,
Norman Lenzner