Our production flooded with blocked threads spawning, like 100 per day. All with identical stacktrace.
Thread 13633: (state = BLOCKED)
- java.lang.Object.wait(long) @bci=0 (Compiled frame; information may be imprecise)
- java.lang.Object.wait() @bci=2, line=502 (Interpreted frame)
- com.aspose.pdf.internal.l57l.l3k.lI(int, boolean) @bci=41 (Interpreted frame)
- com.aspose.pdf.internal.l57l.l3k.dd_() @bci=3 (Interpreted frame)
- com.aspose.pdf.internal.l47if.lf$lI.lj() @bci=4 (Interpreted frame)
- com.aspose.pdf.internal.l47if.lb.ld() @bci=55 (Interpreted frame)
- com.aspose.pdf.internal.l47if.lb.lI(com.aspose.pdf.internal.l47if.lb) @bci=1 (Interpreted frame)
- com.aspose.pdf.internal.l47if.lb$1.lI() @bci=4 (Interpreted frame)
- com.aspose.pdf.internal.l47if.lf$lI$1.lI(java.lang.Object) @bci=25 (Interpreted frame)
- com.aspose.pdf.internal.l57l.l1j.lI(java.lang.Object) @bci=5 (Interpreted frame)
- com.aspose.pdf.internal.l57l.l1n.run() @bci=11 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=748 (Interpreted frame)
and few with:
Thread 9277: (state = BLOCKED)
- java.lang.Object.wait(long) @bci=0 (Compiled frame; information may be imprecise)
- java.lang.Object.wait() @bci=2, line=502 (Compiled frame)
- com.aspose.pdf.internal.l57l.l3k.lI(int, boolean) @bci=41 (Compiled frame)
- com.aspose.pdf.internal.l57l.l3k.dd_() @bci=3 (Compiled frame)
- com.aspose.pdf.internal.l47if.lh.lI(boolean) @bci=4 (Compiled frame)
- com.aspose.pdf.internal.l47if.lk.dispose() @bci=2 (Compiled frame)
- com.aspose.pdf.internal.html.dom.Document.navigate(com.aspose.pdf.internal.html.dom.Document$lj) @bci=212 (Compiled frame)
- com.aspose.pdf.internal.html.dom.Document.(com.aspose.pdf.internal.html.lj, com.aspose.pdf.internal.html.dom.Document$lI) @bci=25 (Compiled frame)
- com.aspose.pdf.internal.html.HTMLDocument.(com.aspose.pdf.internal.html.net.RequestMessage, com.aspose.pdf.internal.html.Configuration, byte) @bci=18 (Compiled frame)
- com.aspose.pdf.internal.html.HTMLDocument.(com.aspose.pdf.internal.html.Url, com.aspose.pdf.internal.html.Configuration) @bci=7 (Compiled frame)
- com.aspose.pdf.internal.html.rendering.EpubRenderer.convertXHTML(com.aspose.pdf.internal.l36l.lb$lI, com.aspose.pdf.internal.html.Configuration, com.aspose.pdf.internal.ms.System.l10j) @bci=9 (Compiled frame)
- com.aspose.pdf.internal.html.rendering.EpubRenderer.addDocumentSources(com.aspose.pdf.internal.html.Configuration, com.aspose.pdf.internal.l36l.lt, com.aspose.pdf.internal.ms.System.Collections.Generic.l0t, com.aspose.pdf.internal.html.net.MessageHandler, com.aspose.pdf.internal.ms.System.l10j) @bci=131 (Interpreted frame)
- com.aspose.pdf.internal.html.rendering.EpubRenderer.render(com.aspose.pdf.internal.html.rendering.IDevice, com.aspose.pdf.internal.html.Configuration, com.aspose.pdf.internal.ms.System.l10j, com.aspose.pdf.internal.ms.System.IO.Stream[]) @bci=105 (Interpreted frame)
- com.aspose.pdf.internal.html.rendering.EpubRenderer.render(com.aspose.pdf.internal.html.rendering.IDevice, com.aspose.pdf.internal.ms.System.l10j, com.aspose.pdf.internal.ms.System.IO.Stream[]) @bci=14 (Interpreted frame)
- com.aspose.pdf.internal.html.rendering.EpubRenderer.render(com.aspose.pdf.internal.html.rendering.IDevice, com.aspose.pdf.internal.ms.System.l10j, java.lang.Object[]) @bci=7 (Interpreted frame)
- com.aspose.pdf.internal.html.rendering.Renderer.render(com.aspose.pdf.internal.html.rendering.IDevice, java.lang.Object, com.aspose.pdf.internal.ms.System.l10j) @bci=28 (Interpreted frame)
- com.aspose.pdf.internal.html.rendering.Renderer.render(com.aspose.pdf.internal.html.rendering.IDevice, java.lang.Object) @bci=9 (Interpreted frame)
- com.aspose.pdf.l4k.lI(com.aspose.pdf.internal.ms.System.IO.Stream, com.aspose.pdf.IDocument, com.aspose.pdf.EpubLoadOptions) @bci=222 (Interpreted frame)
- com.aspose.pdf.ADocument.lI(com.aspose.pdf.internal.ms.System.IO.Stream, com.aspose.pdf.LoadOptions) @bci=500 (Interpreted frame)
- com.aspose.pdf.ADocument.(com.aspose.pdf.internal.ms.System.IO.Stream, com.aspose.pdf.LoadOptions) @bci=189 (Interpreted frame)
- com.aspose.pdf.Document.(java.io.InputStream, com.aspose.pdf.LoadOptions) @bci=6 (Interpreted frame)
- com.keepit.aspose.task.PdfPreviewGeneratorTask.initDocument(com.keepit.utils.ThumbnailFormat) @bci=360, line=76 (Interpreted frame)
- com.keepit.aspose.task.PdfPreviewGeneratorTask.generate(java.io.OutputStream, com.keepit.utils.ThumbnailFormat) @bci=2, line=37 (Interpreted frame)
- com.keepit.aspose.server.RequestProcessor.generatePreviewDependsOnType(com.keepit.utils.KeepitInputStream, java.io.ByteArrayOutputStream) @bci=43, line=195 (Compiled frame)
- com.keepit.aspose.server.RequestProcessor.processAsposeTransformRequest(java.io.OutputStream) @bci=98, line=168 (Compiled frame)
- com.keepit.aspose.server.RequestProcessor.run() @bci=128, line=66 (Compiled frame)
- java.util.concurrent.ThreadPoolExecutor.runWorker(java.util.concurrent.ThreadPoolExecutor$Worker) @bci=95, line=1142 (Interpreted frame)
- java.util.concurrent.ThreadPoolExecutor$Worker.run() @bci=5, line=617 (Interpreted frame)
- java.lang.Thread.run() @bci=11, line=748 (Interpreted frame)
I am no able to reproduce this on test environment. Our code looks like
InputStream in = new FileInputStream(new File(“pdf.pdf”));
Document pdfDocument = new Document(in);
PdfConverter converter = new PdfConverter(pdfDocument);
try {
converter.setStartPage(1);
converter.setEndPage(1);
converter.doConvert();
converter.getNextImage(new FileOutputStream(new File(“jpg.jpg”)), ImageType.getJpeg(), 1024, 768, 70);
} finally {
converter.close();
}
Running on Ubuntu 16, Oracle JDK 8 . Any ideas what that could be?