Migrating from solr 7.7 to solr 8.6 issues

[Abhishek Mishra <so...@gmail.com>]

We are trying to migrate from solr 7.7 to solr 8.6 on Kubernetes. We are
using zookeeper-3.4.13. While adding a replica to the cluster, it returns
500 status code. While in the background it is added sometimes successfully
while sometime it is in the inactive node. We are using http2 without SSL.

Error:

>  {

  "responseHeader":{
    "status":500,
    "QTime":307},
  "failure":{

"solr-pklatest-statefulset-pull-0.solr-pklatest-statefulset-headless.relevance:8983_solr":"org.apache.solr.client.solrj.SolrServerException:IOException
occured when talking to server at: null"},
  "Operation addreplica caused
exception:":"org.apache.solr.common.SolrException:org.apache.solr.common.SolrException:
ADDREPLICA failed to create replica",
  "exception":{
    "msg":"ADDREPLICA failed to create replica",
    "rspCode":500},
  "error":{
    "metadata":[
      "error-class","org.apache.solr.common.SolrException",
      "root-error-class","org.apache.solr.common.SolrException"],
    "msg":"ADDREPLICA failed to create replica",
    "trace":"org.apache.solr.common.SolrException: ADDREPLICA failed to
create replica\n\tat
org.apache.solr.client.solrj.SolrResponse.getException(SolrResponse.java:65)\n\tat
org.apache.solr.handler.admin.CollectionsHandler.invokeAction(CollectionsHandler.java:286)\n\tat
org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:257)\n\tat
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:214)\n\tat
org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:854)\n\tat
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:818)\n\tat
org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:566)\n\tat
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:415)\n\tat
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:345)\n\tat
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1596)\n\tat
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545)\n\tat
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)\n\tat
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:590)\n\tat
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)\n\tat
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)\n\tat
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610)\n\tat
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)\n\tat
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1300)\n\tat
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)\n\tat
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:485)\n\tat
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580)\n\tat
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)\n\tat
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1215)\n\tat
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)\n\tat
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221)\n\tat
org.eclipse.jetty.server.handler.InetAccessHandler.handle(InetAccessHandler.java:177)\n\tat
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)\n\tat
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)\n\tat
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)\n\tat
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)\n\tat
org.eclipse.jetty.server.Server.handle(Server.java:500)\n\tat
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)\n\tat
org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:547)\n\tat
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)\n\tat
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)\n\tat
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)\n\tat
org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)\n\tat
org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)\n\tat
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)\n\tat
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)\n\tat
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)\n\tat
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)\n\tat
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)\n\tat
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)\n\tat
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)\n\tat
java.base/java.lang.Thread.run(Unknown Source)\n",
    "code":500}}