Hello, I've upgraded the SolrCloud from 7.6 to 8.8 and unfortunately I got the following exception on Atomic updates of some of the documents.
And in some cases some fields are retrieved with an array of multi values in case the field is defined as a single value. Is there a bug on this version regarding the Atomic updates? And how can I solve this issue? org.apache.solr.common.SolrException: TransactionLog doesn't know how to serialize class org.apache.lucene.document.LazyDocument$LazyField; try implementing ObjectResolver? at org.apache.solr.update.TransactionLog$1.resolve(TransactionLog.java:100) at org.apache.solr.common.util.JavaBinCodec.writeVal(JavaBinCodec.java:266) at org.apache.solr.common.util.JavaBinCodec$BinEntryWriter.put(JavaBinCodec.java:441) at org.apache.solr.common.ConditionalKeyMapWriter$EntryWriterWrapper.put(ConditionalKeyMapWriter.java:44) at org.apache.solr.common.MapWriter$EntryWriter.putNoEx(MapWriter.java:101) at org.apache.solr.common.MapWriter$EntryWriter.lambda$getBiConsumer$0(MapWriter.java:161) at org.apache.solr.common.SolrInputDocument.lambda$writeMap$0(SolrInputDocument.java:59) at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) at org.apache.solr.common.SolrInputDocument.writeMap(SolrInputDocument.java:61) at org.apache.solr.common.util.JavaBinCodec.writeSolrInputDocument(JavaBinCodec.java:667) at org.apache.solr.update.TransactionLog.write(TransactionLog.java:397) at org.apache.solr.update.UpdateLog.add(UpdateLog.java:585) at org.apache.solr.update.UpdateLog.add(UpdateLog.java:557) at org.apache.solr.update.DirectUpdateHandler2.doNormalUpdate(DirectUpdateHandler2.java:351) at org.apache.solr.update.DirectUpdateHandler2.addDoc0(DirectUpdateHandler2.java:294) at org.apache.solr.update.DirectUpdateHandler2.addDoc(DirectUpdateHandler2.java:241) at org.apache.solr.update.processor.RunUpdateProcessorFactory$RunUpdateProcessor.processAdd(RunUpdateProcessorFactory.java:73) at org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55) at org.apache.solr.update.processor.DistributedUpdateProcessor.doLocalAdd(DistributedUpdateProcessor.java:256) at org.apache.solr.update.processor.DistributedUpdateProcessor.doVersionAdd(DistributedUpdateProcessor.java:495) at org.apache.solr.update.processor.DistributedUpdateProcessor.lambda$versionAdd$0(DistributedUpdateProcessor.java:336) at org.apache.solr.update.VersionBucket.runWithLock(VersionBucket.java:50) at org.apache.solr.update.processor.DistributedUpdateProcessor.versionAdd(DistributedUpdateProcessor.java:336) at org.apache.solr.update.processor.DistributedUpdateProcessor.processAdd(DistributedUpdateProcessor.java:222) at org.apache.solr.update.processor.DistributedZkUpdateProcessor.processAdd(DistributedZkUpdateProcessor.java:245) at org.apache.solr.handler.loader.JavabinLoader$1.update(JavabinLoader.java:110) at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$StreamingCodec.readOuterMostDocIterator(JavaBinUpdateRequestCodec.java:343) at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$StreamingCodec.readIterator(JavaBinUpdateRequestCodec.java:291) at org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:338) at org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:283) at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec$StreamingCodec.readNamedList(JavaBinUpdateRequestCodec.java:244) at org.apache.solr.common.util.JavaBinCodec.readObject(JavaBinCodec.java:303) at org.apache.solr.common.util.JavaBinCodec.readVal(JavaBinCodec.java:283) at org.apache.solr.common.util.JavaBinCodec.unmarshal(JavaBinCodec.java:196) at org.apache.solr.client.solrj.request.JavaBinUpdateRequestCodec.unmarshal(JavaBinUpdateRequestCodec.java:131) at org.apache.solr.handler.loader.JavabinLoader.parseAndLoadDocs(JavabinLoader.java:122) at org.apache.solr.handler.loader.JavabinLoader.load(JavabinLoader.java:70) at org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:97) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:82) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:216) at org.apache.solr.core.SolrCore.execute(SolrCore.java:2646) at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:794) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:567) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:427) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:357) at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:201) at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:602) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1612) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1582) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:191) at org.eclipse.jetty.server.handler.InetAccessHandler.handle(InetAccessHandler.java:177) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:516) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375) at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:335) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:135) at org.eclipse.jetty.http2.HTTP2Connection.produce(HTTP2Connection.java:183) at org.eclipse.jetty.http2.HTTP2Connection.onFillable(HTTP2Connection.java:138) at org.eclipse.jetty.http2.HTTP2Connection$FillableCallback.succeeded(HTTP2Connection.java:361) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:773) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:905) at java.base/java.lang.Thread.run(Thread.java:844) Regards, Mahmoud