Hi Austin,

Sitecore is a commercial product so your first port of call should be whoever sold you or is supporting Sitecore....a quick (and by no means deep) bit of research shows this error may be generated by the Sitecore indexer process calling Solr. We won't be able to see how it does that if it's closed source code.

Cheers

Charlie

On 20/07/2020 04:53, Austin Kimmel wrote:
Hello,

We are seeing the following errors with Sitecore 9.3 connecting to a Solr 8.1.1 
cluster running on Zookeeper and haven't been able to resolve:


2020-07-17 18:10:58.238 WARN  (zkCallback-8-thread-3) [c:pj4_sitecore_web_index s:shard1 r:core_node5 x:pj4_sitecore_web_index_shard1_replica_n2] o.a.s.u.PeerSync PeerSync: 
core=pj4_sitecore_web_index_shard1_replica_n2 url=https://10.5.64.40:8984/solr  got a 503 from https://10.5.64.41:8984/solr/pj4_sitecore_web_index_shard1_replica_n1/, 
counting as success => org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at 
https://10.5.64.41:8984/solr/pj4_sitecore_web_index_shard1_replica_n1: Expected mime type application/octet-stream but got application/json. {   "error":{     
"metadata":[       "error-class","org.apache.solr.common.SolrException",       
"root-error-class","org.apache.solr.common.SolrException"],     "msg":"SolrCore is loading",     "code":503}}

     at org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:613) org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: 
Error from server at https://10.5.64.41:8984/solr/pj4_sitecore_web_index_shard1_replica_n1: Expected mime type application/octet-stream but got application/json. {   
"error":{     "metadata":[       "error-class","org.apache.solr.common.SolrException",       
"root-error-class","org.apache.solr.common.SolrException"],     "msg":"SolrCore is loading",     "code":503}}


2020-07-17 18:10:58.276 ERROR (zkCallback-8-thread-3) [c:pj4_sitecore_web_index s:shard1 r:core_node5 x:pj4_sitecore_web_index_shard1_replica_n2] o.a.s.c.SyncStrategy 
Sync request error: org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at 
https://10.5.64.41:8984/solr/pj4_sitecore_web_index_shard1_replica_n1: Expected mime type application/octet-stream but got application/json. {   "error":{     
"metadata":[       "error-class","org.apache.solr.common.SolrException",       
"root-error-class","org.apache.solr.common.SolrException"],     "msg":"SolrCore is loading",     "code":503}}


2020-07-17 18:10:59.598 ERROR (qtp1661210650-149) [   ] o.a.s.s.HttpSolrCall 
null:org.apache.solr.common.SolrException: Error trying to proxy request for 
url: https://10.5.64.42:8984/solr/pj4_sitecore_web_index/admin/ping     at 
org.apache.solr.servlet.HttpSolrCall.remoteQuery(HttpSolrCall.java:692)     at 
org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:526)     at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:397)
     at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:343)
     at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602)
     at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)     
at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)   
  at 
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)     
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) 
    at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
     at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)
     at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
     at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
     at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
     at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)     
at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)
     at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
     at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
     at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)   
  at 
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220)
     at 
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
     at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) 
    at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:335)
     at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) 
    at org.eclipse.jetty.server.Server.handle(Server.java:502)     at 
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)     at 
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)     
at 
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
     at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)     
at 
org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:411)
     at 
org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:305)     
at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:159)   
  at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)     at 
org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)     at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
     at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
     at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
     at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
     at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
     at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
     at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683) 
    at java.base/java.lang.Thread.run(Thread.java:830) Caused by: 
org.apache.http.conn.HttpHostConnectException: Connect to 10.5.64.42:8984 
[/10.5.64.42] failed: Connection refused: no further information     at 
org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:159)
     at 
org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:373)
     at 
org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:394)
     at 
org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:237)  
   at 
org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)     
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)     at 
org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)     
at 
org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
     at 
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
     at 
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
     at org.apache.solr.servlet.HttpSolrCall.remoteQuery(HttpSolrCall.java:664) 
    ... 41 more Caused by: java.net.ConnectException: Connection refused: no 
further information     at java.base/sun.nio.ch.Net.pollConnect(Native Method)  
   at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:579)     at 
java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:549)   
  at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597)     at 
java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:339)     at 
java.base/java.net.Socket.connect(Socket.java:603)     at 
org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:339)
     at 
org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
     ... 51 more


2020-07-17 18:10:59.603 ERROR (qtp1661210650-22) [   ] o.a.s.s.HttpSolrCall 
null:org.apache.solr.common.SolrException: Error trying to proxy request for 
url: https://10.5.64.42:8984/solr/pj4_sitecore_web_index/admin/ping     at 
org.apache.solr.servlet.HttpSolrCall.remoteQuery(HttpSolrCall.java:692)     at 
org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:526)     at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:397)
     at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:343)
     at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1602)
     at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:540)     
at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146)   
  at 
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)     
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) 
    at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257)
     at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588)
     at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255)
     at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1345)
     at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203)
     at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480)     
at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557)
     at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201)
     at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247)
     at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144)   
  at 
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:220)
     at 
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
     at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) 
    at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:335)
     at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) 
    at org.eclipse.jetty.server.Server.handle(Server.java:502)     at 
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364)     at 
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260)     
at 
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
     at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)     
at 
org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:411)
     at 
org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:305)     
at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:159)   
  at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)     at 
org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118)     at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
     at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
     at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
     at 
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126)
     at 
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366)
     at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765)
     at 
org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683) 
    at java.base/java.lang.Thread.run(Thread.java:830) Caused by: 
org.apache.http.conn.HttpHostConnectException: Connect to 10.5.64.42:8984 
[/10.5.64.42] failed: Connection refused: no further information     at 
org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:159)
     at 
org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:373)
     at 
org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:394)
     at 
org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:237)  
   at 
org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:185)     
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)     at 
org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)     
at 
org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
     at 
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
     at 
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
     at org.apache.solr.servlet.HttpSolrCall.remoteQuery(HttpSolrCall.java:664) 
    ... 41 more Caused by: java.net.ConnectException: Connection refused: no 
further information     at java.base/sun.nio.ch.Net.pollConnect(Native Method)  
   at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:579)     at 
java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:549)   
  at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597)     at 
java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:339)     at 
java.base/java.net.Socket.connect(Socket.java:603)     at 
org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:339)
     at 
org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
     ... 51 more


2020-07-17 18:11:05.350 ERROR 
(updateExecutor-5-thread-7-processing-n:10.5.64.40:8984_solr 
x:pj4_sitecore_web_index_shard1_replica_n2 c:pj4_sitecore_web_index s:shard1 
r:core_node5) [c:pj4_sitecore_web_index s:shard1 r:core_node5 
x:pj4_sitecore_web_index_shard1_replica_n2] o.a.s.u.SolrCmdDistributor 
org.apache.solr.client.solrj.SolrServerException: IOException occured when 
talking to server at: null

     at 
org.apache.solr.client.solrj.impl.Http2SolrClient.request(Http2SolrClient.java:416)


Thanks!

Austin Kimmel
Software Developer
Vail Resorts, Inc.
303-404-1922
akim...@vailresorts.com<mailto:akim...@vailresorts.com>

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