在复制过程中，SolrCloud（7.7.1）中存在错误，我们无法理解。
在我们当选的领导人上，我们看到：
request: http://solr-1.search-solr.preprod.k8.atcloud.io:80/solr/at-uk_shard1_replica_n2/update?update.distrib=FROMLEADER&distrib.from=http%3A%2F%2Fsolr-2.search-solr.preprod.k8.atcloud.io%3A80%2Fsolr%2Fat-uk_shard1_replica_n1%2F&wt=javabin&version=2
Remote error message: org.apache.solr.common.util.ByteArrayUtf8CharSequence cannot be cast to java.lang.String
at org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrClient$Runner.sendUpdateStream(ConcurrentUpdateSolrClient.java:385) ~[solr-solrj-7.7.1.jar:7.7.1 5bf96d32f88eb8a2f5e775339885cd6ba84a3b58 - ishan - 2019-02-23 02:39:09]
at org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrClient$Runner.run(ConcurrentUpdateSolrClient.java:183) ~[solr-solrj-7.7.1.jar:7.7.1 5bf96d32f88eb8a2f5e775339885cd6ba84a3b58 - ishan - 2019-02-23 02:39:09]
at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176) ~[metrics-core-3.2.6.jar:3.2.6]
at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:209) ~[solr-solrj-7.7.1.jar:7.7.1 5bf96d32f88eb8a2f5e775339885cd6ba84a3b58 - ishan - 2019-02-23 02:39:09]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[?:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[?:1.8.0_191]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
如果您查看副本的日志，则会看到：
08:35:22.060 [qtp1540374340-20] ERROR org.apache.solr.servlet.HttpSolrCall - null:java.lang.ClassCastException: org.apache.solr.common.util.ByteArrayUtf8CharSequence cannot be cast to java.lang.String
at org.apache.solr.common.util.JavaBinCodec.readEnumFieldValue(JavaBinCodec.java:813)
at org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:339)
at org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:278)
at org.apache.solr.common.util.JavaBinCodec.readSolrInputDocument(JavaBinCodec.java:640)
at org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:337)
at org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:278)
at org.apache.solr.common.util.JavaBinCodec.readMapEntry(JavaBinCodec.java:819)
at org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:341)
at org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:278)
at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$StreamingCodec.readOuterMostDocIterator(JavaBinUpdateRequestCodec.java:295)
at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$StreamingCodec.readIterator(JavaBinUpdateRequestCodec.java:280)
at org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:333)
at org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:278)
at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$StreamingCodec.readNamedList(JavaBinUpdateRequestCodec.java:235)
at org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:298)
at org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:278)
at org.apache.solr.common.util.JavaBinCodec.unmarshal(JavaBinCodec.java:191)
at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec.unmarshal(JavaBinUpdateRequestCodec.java:126)
at org.apache.solr.handler.loader.JavabinLoader.parseAndLoadDocs(JavabinLoader.java:123)
at org.apache.solr.handler.loader.JavabinLoader.load(JavabinLoader.java:70)
at org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:97)
at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:68)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2551)
at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:710)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:516)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:395)
at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:341)
at org.eclipse.jetty.servlet.ServletHandler$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.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.lang.Thread.run(Thread.java:748)
似乎可以正确索引文档（我们可以看到），但是显然，我们不想忽略这些错误-但是我们正在努力查看它们是由什么引起的。
任何帮助，Ta