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https://issues.apache.org/jira/browse/SOLR-5402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13810551#comment-13810551
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Michael Tracey commented on SOLR-5402:
--------------------------------------
I can confirm the same thing, it errors with a single document. That's the
last test I did before rolling my infrastructure back to 4.4. I can index
1000's of documents at a time without issue to a single server, but when
SolrCloud 4.5.1 tries to sync two nodes, it fails (same errors as above).
> SolrCloud 4.5 bulk add errors in cloud setup
> --------------------------------------------
>
> Key: SOLR-5402
> URL: https://issues.apache.org/jira/browse/SOLR-5402
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 4.5, 4.5.1
> Reporter: Sai Gadde
> Fix For: 4.6
>
>
> We use out of the box Solr 4.5.1 no customization done. If we merge documents
> via SolrJ to a single server it is perfectly working fine.
> But as soon as we add another node to the cloud we are getting following
> while merging documents. We merge about 500 at a time using SolrJ. These 500
> documents in total are about few MB (1-3) in size.
> This is the error we are getting on the server (10.10.10.116 - IP is
> irrelavent just for clarity)where merging is happening. 10.10.10.119 is the
> new node here. This server gets RemoteSolrException
> shard update error StdNode:
> http://10.10.10.119:8980/solr/mycore/:org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException:
> Illegal to have multiple roots (start tag in epilog?).
> at [row,col {unknown-source}]: [1,12468]
> at
> org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:425)
> at
> org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:180)
> at
> org.apache.solr.update.SolrCmdDistributor$1.call(SolrCmdDistributor.java:401)
> at
> org.apache.solr.update.SolrCmdDistributor$1.call(SolrCmdDistributor.java:1)
> at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
> at java.util.concurrent.FutureTask.run(Unknown Source)
> at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
> at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
> at java.util.concurrent.FutureTask.run(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown
> Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)
> On the other server 10.10.10.119 we get following error
> org.apache.solr.common.SolrException: Illegal to have multiple roots (start
> tag in epilog?).
> at [row,col {unknown-source}]: [1,12468]
> at org.apache.solr.handler.loader.XMLLoader.load(XMLLoader.java:176)
> at
> org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:92)
> at
> org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:74)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1859)
> at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:703)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:406)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:195)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
> at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
> at
> org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: com.ctc.wstx.exc.WstxParsingException: Illegal to have multiple
> roots (start tag in epilog?).
> at [row,col {unknown-source}]: [1,12369]
> at
> com.ctc.wstx.sr.StreamScanner.constructWfcException(StreamScanner.java:630)
> at com.ctc.wstx.sr.StreamScanner.throwParseError(StreamScanner.java:461)
> at
> com.ctc.wstx.sr.BasicStreamReader.handleExtraRoot(BasicStreamReader.java:2155)
> at
> com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2070)
> at
> com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2647)
> at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1019)
> at
> org.apache.solr.handler.loader.XMLLoader.processUpdate(XMLLoader.java:213)
> at org.apache.solr.handler.loader.XMLLoader.load(XMLLoader.java:174)
> ... 22 more
> We tried with 4.5.0 first and then with 4.5.1 later. Both produce exact same
> error.
> Note: This error is not present when we switched exact setup to 4.4.0
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