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https://issues.apache.org/jira/browse/SOLR-14088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16997711#comment-16997711
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Robert Muir commented on SOLR-14088:
------------------------------------
i surely hope there is no child-first happening anywhere!
If the problem can be reproduced with additional jvm argument:
{{-Xlog:class+load=debug}}, you will see logs of each class and which
classloader loaded it. it should make it possible to sort out.
> Tika and commons-compress dependency in solr core causes classloader issue
> --------------------------------------------------------------------------
>
> Key: SOLR-14088
> URL: https://issues.apache.org/jira/browse/SOLR-14088
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: contrib - Solr Cell (Tika extraction)
> Reporter: Kevin Risden
> Priority: Major
>
> SOLR-14086 found that if commons-compress is in core ivy.xml as a compile
> dependency, it messes up the classloader for any commons-compress
> dependencies. It causes issues with items like xz being loaded.
> This is problematic where dependencies shouldn't matter based on classloader.
> This jira to to determine if there is something wrong w/ Solr's classloader
> or if its a commons-compress issue only.
> Error message from SOLR-14086 copied below:
> {code:java}
> <html>
> <head>
> <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
> <title>Error 500 java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.commons.compress.archivers.sevenz.Coders</title>
> </head>
> <body><h2>HTTP ERROR 500 java.lang.NoClassDefFoundError: Could not initialize
> class org.apache.commons.compress.archivers.sevenz.Coders</h2>
> <table>
> <tr><th>URI:</th><td>/solr/tika-integration-example/update/extract</td></tr>
> <tr><th>STATUS:</th><td>500</td></tr>
> <tr><th>MESSAGE:</th><td>java.lang.NoClassDefFoundError: Could not initialize
> class org.apache.commons.compress.archivers.sevenz.Coders</td></tr>
> <tr><th>SERVLET:</th><td>default</td></tr>
> <tr><th>CAUSED BY:</th><td>java.lang.NoClassDefFoundError: Could not
> initialize class org.apache.commons.compress.archivers.sevenz.Coders</td></tr>
> </table>
> <h3>Caused by:</h3><pre>java.lang.NoClassDefFoundError: Could not initialize
> class org.apache.commons.compress.archivers.sevenz.Coders
> at
> org.apache.commons.compress.archivers.sevenz.SevenZFile.readEncodedHeader(SevenZFile.java:437)
> at
> org.apache.commons.compress.archivers.sevenz.SevenZFile.readHeaders(SevenZFile.java:355)
> at
> org.apache.commons.compress.archivers.sevenz.SevenZFile.<init>(SevenZFile.java:241)
> at
> org.apache.commons.compress.archivers.sevenz.SevenZFile.<init>(SevenZFile.java:108)
> at
> org.apache.commons.compress.archivers.sevenz.SevenZFile.<init>(SevenZFile.java:262)
> at
> org.apache.tika.parser.pkg.PackageParser.parse(PackageParser.java:257)
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
> at
> org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
> at
> org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:143)
> at
> org.apache.solr.handler.extraction.ExtractingDocumentLoader.load(ExtractingDocumentLoader.java:228)
> at
> org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:68)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:208)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:2582)
> at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:799)
> at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:578)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:419)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:351)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1596)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:590)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1607)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1297)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:485)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1577)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1212)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221)
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at
> org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
> at org.eclipse.jetty.server.Server.handle(Server.java:500)
> at
> org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
> at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:547)
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
> at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:270)
> at
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
> at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
> at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
> at
> org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
> at
> org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:388)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
> at java.base/java.lang.Thread.run(Thread.java:834)
> </pre>
> </body>
> </html>
> {code}
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