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From Sai Gadde <gadde....@gmail.com>
Subject Re: Solr 4.5.1 replication Bug? "Illegal to have multiple roots (start tag in epilog?)."
Date Tue, 29 Oct 2013 04:36:04 GMT
Hi Michael,

I downgraded to Solr 4.4.0 and this issue is gone. No additional settings
or tweaks are done.

This is not a fix or solution I guess but, in our case we wanted something
working and we were running out of time.

I will watch this thread if there are any suggestions but, possibly we will
stay with 4.4.0 for sometime.

Regards
Sai


On Tue, Oct 29, 2013 at 4:36 AM, Michael Tracey <mtracey@biblio.com> wrote:

> Hey, this is Michael, who was having the exact error on the Jetty side
> with an update.  I've upgraded jetty from the 4.5.1 embedded version (in
> the example directory) to version 9.0.6, which means I had to upgrade my
> OpenJDK from 1.6 to 1.7.0_45.  Also, I added the suggested (very large)
> settings to my solrconfig.xml:
>
> <requestParsers enableRemoteStreaming="true"
> formdataUploadLimitInKB="2048000" multipartUploadLimitInKB="2048000" />
>
> but I am still getting the errors when I put a second server in the cloud.
> Single servers (external zookeeper, but no cloud partner) works just fine.
>
> I suppose my next step is to try Tomcat, but according to your post, it
> will not help!
>
> Any help is appreciated,
>
> M.
>
> ----- Original Message -----
> From: "Sai Gadde" <gadde.sai@gmail.com>
> To: solr-user@lucene.apache.org
> Sent: Monday, October 28, 2013 7:10:41 AM
> Subject: Solr 4.5.1 replication Bug? "Illegal to have multiple roots
> (start tag in epilog?)."
>
> we have a similar error as this thread.
>
> http://www.mail-archive.com/solr-user@lucene.apache.org/msg90748.html
>
> Tried tomcat setting from this post. We used exact setting sepecified
> here. we merge 500 documents at a time. I am creating a new thread
> because Michael is using Jetty where as we use Tomcat.
>
>
> formdataUploadLimitInKB and multipartUploadLimitInKB limits are set to very
> high value 2GB. As suggested in the following thread.
> https://issues.apache.org/jira/browse/SOLR-5331
>
>
> 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.
>
>
>
> 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.
>
>
> Any ideas regarding how to resolve this? or is this a bug?
>
> Looks like it is a common error as it affects cloud setup and there
> must a workaround but we cannot figure it out. Any help appreciated.
>
>
> Thanks in advance
>
> Sai
>

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