IndexQueue has a large number of waiting and failed entries in Windchill PDMLink

2022-10-25 08:06:55.525 ERROR (qtp110456297-163635) [   ] o.a.s.s.HttpSolrCall null:org.apache.solr.common.SolrException: SolrCore 'clfstructurelib' is not available due to init failure: Error opening new searcher
	at org.apache.solr.core.CoreContainer.getCore(CoreContainer.java:1066)
	at org.apache.solr.servlet.HttpSolrCall.init(HttpSolrCall.java:256)
	at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:418)
	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:257)
	at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:208)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1160)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1092)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
	at org.eclipse.jetty.server.Server.handle(Server.java:518)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
	at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:246)
	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:156)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.solr.common.SolrException: Error opening new searcher
	at org.apache.solr.core.SolrCore.<init>(SolrCore.java:773)
	at org.apache.solr.core.SolrCore.<init>(SolrCore.java:647)
	at org.apache.solr.core.CoreContainer.create(CoreContainer.java:812)
	at org.apache.solr.core.CoreContainer.lambda$load$0(CoreContainer.java:466)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$22(ExecutorUtil.java:229)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	... 1 more
Caused by: org.apache.solr.common.SolrException: Error opening new searcher
	at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1642)
	at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1753)
	at org.apache.solr.core.SolrCore.initSearcher(SolrCore.java:860)
	at org.apache.solr.core.SolrCore.<init>(SolrCore.java:746)
	... 8 more
Caused by: org.apache.lucene.index.IndexNotFoundException: no segments* file found in LockValidatingDirectoryWrapper(NRTCachingDirectory(MMapDirectory@/ptc/Windchill_IS/SolrServer/solr/data/clfstructurelib/index lockFactory=org.apache.lucene.store.SingleInstanceLockFactory@257ccecc; maxCacheMB=48.0 maxMergeSizeMB=4.0)): files: [_6fb1.fdt, _6fb1.fdx, _6fb1.fnm, _6fb1.si, _6fb1_Lucene50_0.doc, _6fb1_Lucene50_0.pos, _6fb1_Lucene50_0.tim, _6fb1_Lucene50_0.tip, _6fc5.cfe, _6fc5.cfs, _6fc5.si, _6fc7.fdt, _6fc7.fdx, _6fc7.fnm, _6fc7.si, _6fc7_Lucene50_0.doc, _6fc7_Lucene50_0.pos, _6fc7_Lucene50_0.tim, _6fc7_Lucene50_0.tip, _6fc8.fdt, _6fc8.fdx, _6fc8.fnm, _6fc8.si, _6fc8_Lucene50_0.doc, _6fc8_Lucene50_0.pos, _6fc8_Lucene50_0.tim, _6fc8_Lucene50_0.tip, _6fc9.fdt, _6fc9.fdx, _6fc9.fnm, _6fc9.si, _6fc9_Lucene50_0.doc, _6fc9_Lucene50_0.pos, _6fc9_Lucene50_0.tim, _6fc9_Lucene50_0.tip, _6fgn.fdt, _6fgn.fdx, _6fgn.fnm, _6fgn.si, _6fgn_Lucene50_0.doc, _6fgn_Lucene50_0.pos, _6fgn_Lucene50_0.tim, _6fgn_Lucene50_0.tip, _6fgs.fdt, _6fgs.fdx, _6fgs.fnm, _6fgs.si, _6fgs_Lucene50_0.doc, _6fgs_Lucene50_0.pos, _6fgs_Lucene50_0.tim, _6fgs_Lucene50_0.tip]
	at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:905)
	at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:78)
	at org.apache.solr.update.SolrIndexWriter.create(SolrIndexWriter.java:65)
	at org.apache.solr.update.DefaultSolrCoreState.createMainIndexWriter(DefaultSolrCoreState.java:240)
	at org.apache.solr.update.DefaultSolrCoreState.getIndexWriter(DefaultSolrCoreState.java:114)
	at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1603)
	... 11 more