Details
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Bug
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Status: Open
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Major
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Resolution: Unresolved
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8.8.2
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None
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None
Description
We are upgrading from solr 7.4 to 8.8.2 and are using leader/follower replication, SolrCloud or distributed search is not being used.
When starting a follower node, there seem to be a whitelist check in IndexFetcher done for the configured shards, even though there is no sharding configured. The check throws the following exception: Invalid URL syntax in "shards" parameter: null
A possible workaround for us was to pass -Dsolr.disable.shardsWhitelist=true to solr, which will disable the whitelist check entirely. However, this is missing in the index replication documentation.
This is the exception being thrown:
ERROR o.a.s.s.HttpSolrCall org.apache.solr.core.SolrCoreInitializationException: SolrCore 'areadata' is not available due to init failure: Invalid URL syntax in 'leaderUrl' with value ‘…’ at org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:1954) at org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:1927) at org.apache.solr.servlet.HttpSolrCall.init(HttpSolrCall.java:257) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:525) 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$Chain.doFilter(ServletHandler.java:1601) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:602) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1612) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1582) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:234) at org.eclipse.jetty.server.handler.InetAccessHandler.handle(InetAccessHandler.java:177) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:516) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) 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$Runner.run(QueuedThreadPool.java:905) at java.base/java.lang.Thread.run(Unknown Source) Caused by: org.apache.solr.common.SolrException: Invalid URL syntax in 'leaderUrl' with value ‘…’ at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1087) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:922) at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1438) at org.apache.solr.core.CoreContainer.lambda$load$11(CoreContainer.java:853) at com.codahale.metrics.InstrumentedExecutorService$InstrumentedCallable.call(InstrumentedExecutorService.java:202) at java.base/java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ... 1 more Caused by: org.apache.solr.common.SolrException: Invalid URL syntax in 'leaderUrl' with value 'http://search-leader/solr/areadata' at org.apache.solr.handler.IndexFetcher.setLeaderUrl(IndexFetcher.java:291) at org.apache.solr.handler.IndexFetcher.<init>(IndexFetcher.java:254) at org.apache.solr.handler.ReplicationHandler.inform(ReplicationHandler.java:1286) at org.apache.solr.core.SolrResourceLoader.inform(SolrResourceLoader.java:730) at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1038) ... 9 more Caused by: org.apache.solr.common.SolrException: Invalid URL syntax in "shards" parameter: null at org.apache.solr.handler.component.HttpShardHandlerFactory$WhitelistHostChecker.lambda$checkWhitelist$1(HttpShardHandlerFactory.java:540) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(Unknown Source) at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source) at java.base/java.util.Collections$2.tryAdvance(Unknown Source) at java.base/java.util.Collections$2.forEachRemaining(Unknown Source) at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(Unknown Source) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(Unknown Source) at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source) at java.base/java.util.stream.ReferencePipeline.forEach(Unknown Source) at org.apache.solr.handler.component.HttpShardHandlerFactory$WhitelistHostChecker.checkWhitelist(HttpShardHandlerFactory.java:527) at org.apache.solr.handler.IndexFetcher.setLeaderUrl(IndexFetcher.java:286) ... 13 more