Thanks Andreas, That’s an interesting idea.
So are you suggesting that if, say, two parallel/concurrent threads are attempting to load the same document (or same effective document—as we’re passing a byte array into PDDocument.load()) that this could be the cause? i.e., is PDDocument.load not thread-safe? Cheers, Lachlan > On 8 Apr 2021, at 4:18 pm, Andreas Lehmkuehler <[email protected]> wrote: > > Hi, > > could be an issue with the static initialization of PDDocument due to the > java.util.concurrent.ExecutionException but this is just a wild guess. > > We need a test case to reproduce this but I'm afraid that isn't that easy as > concurrency issues are likely not deterministic. But maybe someone comes up > with an idea or better a test case. > > Andreas > > Am 07.04.21 um 12:43 schrieb Lachlan Deck: >> Hi all, >> We’re periodically seeing the above exception in a spring-boot api using >> PDFBox 2.0.21. >> When that occurs the only remedy appears to be restarting the api, after >> which it hums along fine for a day and then hits this error again. >> We’re producing pdfs with jasper (plus taking some optional custom pdfs), >> then using PDFBox to overlay or stitch things together into a final pdf. >> Does anyone know what might cause this to happen, and if it’s potentially >> fixed by the recent 2.0.23 release? >> our.springboot.api.exception.RenderException: failed to render a template >> at our.springboot.api.Rendering... >> at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown >> Source) >> at >> java.base/java.util.ArrayList$ArrayListSpliterator.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.ReduceOps$ReduceOp.evaluateSequential(Unknown >> Source) >> at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source) >> at java.base/java.util.stream.ReferencePipeline.collect(Unknown Source) >> ... >> at jdk.internal.reflect.GeneratedMethodAccessor193.invoke(Unknown >> Source) >> at >> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown >> Source) >> at java.base/java.lang.reflect.Method.invoke(Unknown Source) >> at >> org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) >> at >> org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) >> at >> org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) >> at >> org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878) >> at >> org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792) >> at >> org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) >> at >> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) >> at >> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) >> at >> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) >> at >> org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) >> at >> org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) >> at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) >> at >> org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) >> at brave.servlet.TracingFilter.doFilter(TracingFilter.java:68) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) >> at >> org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) >> at >> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) >> at >> org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) >> at >> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) >> at brave.servlet.TracingFilter.doFilter(TracingFilter.java:87) >> at >> org.springframework.cloud.sleuth.instrument.web.LazyTracingFilter.doFilter(TraceWebServletAutoConfiguration.java:139) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) >> at >> org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:93) >> at >> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) >> at >> org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) >> at >> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) >> at >> org.cloudfoundry.router.ClientCertificateMapper.doFilter(ClientCertificateMapper.java:79) >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) >> at >> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) >> at >> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) >> at >> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) >> at >> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) >> at >> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) >> at >> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) >> at >> org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:747) >> at >> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) >> at >> org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) >> at >> org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) >> at >> org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) >> at >> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589) >> at >> org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) >> at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown >> Source) >> at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown >> Source) >> at >> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) >> at java.base/java.lang.Thread.run(Unknown Source) >> Caused by: java.util.concurrent.ExecutionException: >> java.lang.NoClassDefFoundError: Could not initialize class >> org.apache.pdfbox.pdmodel.PDDocument >> at java.base/java.util.concurrent.FutureTask.report(Unknown Source) >> at java.base/java.util.concurrent.FutureTask.get(Unknown Source) >> at our.springboot.api.v3.service.FooBar >> ... 76 common frames omitted >> Caused by: java.lang.NoClassDefFoundError: Could not initialize class >> org.apache.pdfbox.pdmodel.PDDocument >> at >> our.springboot.api.domain.PDDocumentLoader.load(PDDocumentLoader.java:14) >> … >> at >> org.springframework.cloud.sleuth.instrument.async.TraceCallable.call(TraceCallable.java:71) >> at java.base/java.util.concurrent.FutureTask.run(Unknown Source) >> at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown >> Source) >> at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown >> Source) >> ... 1 common frames omitted >> Kind regards, >> Lachlan Deck >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [email protected] >> For additional commands, e-mail: [email protected] > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] >
