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Type: Bug
Resolution: Fixed
Priority: Low
Fix Version/s: 8.8.0
Affects Version/s: 6.13.8, 7.4.4, 7.13.0
Component/s: Page - Export / Import
Labels:

Support reference count:
21
Symptom Severity:
Severity 3 - Minor
UIS:
4

Issue Summary

Customer reports that he is unable to export a specific page to PDF. Gets the stack trace bellow:

java.lang.RuntimeException: com.atlassian.confluence.importexport.ImportExportException: We couldn't complete your export. The page "<page title>" took too long to convert. <a href="https://docs.atlassian.com/confluence/docs-613/PDF+export+in+Confluence+Data+Center">Learn more</a>
at com.atlassian.confluence.extra.flyingpdf.ExportPageAsPdfAction.doExecute(ExportPageAsPdfAction.java:52)

caused by: com.atlassian.confluence.importexport.ImportExportException: We couldn't complete your export. The page "<page title>" took too long to convert. <a href="https://docs.atlassian.com/confluence/docs-613/PDF+export+in+Confluence+Data+Center">Learn more</a>
at com.atlassian.confluence.extra.flyingpdf.sandbox.SandboxXmlToPdfConverter.convertXhtmlToPdf(SandboxXmlToPdfConverter.java:81)

caused by: com.atlassian.confluence.util.sandbox.SandboxTimeoutException: Sandbox request has been killed because it exceeded time limit of 180 seconds
at com.atlassian.confluence.impl.util.sandbox.SandboxProcess.tryToThrowSpecificException(SandboxProcess.java:227)

caused by: java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:170)

It was found in the page storage format that it contained external images, but they were not visible in the page for reading or editing.

Steps to Reproduce

Page storage format contains the following lines

<ac:image ac:class="caui-wait" ac:alt="Wait"><ri:url ri:value="https://<external site URL>/images/s.gif" /></ac:image>
<ac:image ac:class="caui-wait" ac:alt="Wait"><ri:url ri:value="<external site URL>/images/s.gif" /></ac:image>

Try to export to PDF

Expected Results

Page exported properly

Actual Results

Customer gets timeout error:

020-05-20 09:51:15,977 WARN [http-nio2-8011-exec-176] [confluence.impl.hibernate.ConfluenceHibernateTransactionManager] doRollback Performing rollback. Transactions:
  ->[null]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT (Session #1994390836)
 -- url: /spaces/flyingpdf/pdfpageexport.action | traceId: 16a4d71ffa52dd3d | userName: <user> | referer: https://<page URL>
2020-05-20 09:51:15,978 ERROR [http-nio2-8011-exec-176] [atlassian.confluence.servlet.ConfluenceServletDispatcher] sendError Could not execute action
 -- url: /spaces/flyingpdf/pdfpageexport.action | traceId: 16a4d71ffa52dd3d | userName: <user> | referer: https://<page URL>
java.lang.RuntimeException: com.atlassian.confluence.importexport.ImportExportException: We couldn't complete your export. The page "<page title>" took too long to convert. <a href="https://docs.atlassian.com/confluence/docs-613/PDF+export+in+Confluence+Data+Center">Learn more</a>
	at com.atlassian.confluence.extra.flyingpdf.ExportPageAsPdfAction.doExecute(ExportPageAsPdfAction.java:52)
	at com.atlassian.confluence.extra.flyingpdf.PdfExportSemaphore.run(PdfExportSemaphore.java:24)
	at com.atlassian.confluence.extra.flyingpdf.ExportPageAsPdfAction.execute(ExportPageAsPdfAction.java:25)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
	at com.atlassian.confluence.core.ConfluenceWorkflowInterceptor.intercept(ConfluenceWorkflowInterceptor.java:33)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
	at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
	at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
...
	at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126)
	at sun.nio.ch.Invoker$2.run(Invoker.java:218)
	at sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)
Caused by: com.atlassian.confluence.importexport.ImportExportException: We couldn't complete your export. The page "<page title>" took too long to convert. <a href="https://docs.atlassian.com/confluence/docs-613/PDF+export+in+Confluence+Data+Center">Learn more</a>
	at com.atlassian.confluence.extra.flyingpdf.sandbox.SandboxXmlToPdfConverter.convertXhtmlToPdf(SandboxXmlToPdfConverter.java:81)
	at com.atlassian.confluence.extra.flyingpdf.sandbox.SandboxPdfExporterService.renderPdf(SandboxPdfExporterService.java:321)
	at com.atlassian.confluence.extra.flyingpdf.sandbox.SandboxPdfExporterService.createPdf(SandboxPdfExporterService.java:307)
	at com.atlassian.confluence.extra.flyingpdf.sandbox.SandboxPdfExporterService.createPdfForPage(SandboxPdfExporterService.java:206)
	at com.atlassian.confluence.extra.flyingpdf.DelegatingPdfExporterService.createPdfForPage(DelegatingPdfExporterService.java:61)
	at com.atlassian.confluence.extra.flyingpdf.DiagnosticPdfExporterService.createPdfForPage(DiagnosticPdfExporterService.java:74)
	at com.atlassian.confluence.extra.flyingpdf.ExportPageAsPdfAction.doExecute(ExportPageAsPdfAction.java:32)
	... 394 more
Caused by: com.atlassian.confluence.util.sandbox.SandboxTimeoutException: Sandbox request has been killed because it exceeded time limit of 180 seconds
	at com.atlassian.confluence.impl.util.sandbox.SandboxProcess.tryToThrowSpecificException(SandboxProcess.java:227)
	at com.atlassian.confluence.impl.util.sandbox.SandboxProcess.execute(SandboxProcess.java:159)
	at com.atlassian.confluence.impl.util.sandbox.DefaultSandboxPool.execute(DefaultSandboxPool.java:116)
	at com.atlassian.confluence.impl.util.sandbox.ConfluenceSandboxPoolFactory$LazySandbox.execute(ConfluenceSandboxPoolFactory.java:72)
	at com.atlassian.confluence.impl.util.sandbox.DefaultSandbox.execute(DefaultSandbox.java:36)
	at com.atlassian.confluence.extra.flyingpdf.sandbox.PdfExportSandbox.execute(PdfExportSandbox.java:41)
	at com.atlassian.confluence.extra.flyingpdf.sandbox.SandboxXmlToPdfConverter.convertXhtmlToPdf(SandboxXmlToPdfConverter.java:61)
	... 400 more
Caused by: java.io.IOException: Stream closed
	at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:170)
	at java.io.BufferedInputStream.fill(BufferedInputStream.java:214)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:265)
	at java.io.DataInputStream.readInt(DataInputStream.java:388)
	at com.atlassian.confluence.impl.util.sandbox.SandboxMessage.receiveMessage(SandboxMessage.java:42)
	at com.atlassian.confluence.impl.util.sandbox.SandboxProcess.receiveMessage(SandboxProcess.java:283)
	at com.atlassian.confluence.impl.util.sandbox.SandboxProcess.execute(SandboxProcess.java:156)
	... 405 more
2020-05-20 09:51:15,982 WARN [http-nio2-8011-exec-176] [confluence.util.profiling.DefaultActivityMonitor] close Exceeded the threshold of 60000 ms: ActivitySnapshot{startTime=1589982495563, threadId=246526, threadName='http-nio2-8011-exec-176', userId='<user>', type='web-request', summary='/spaces/flyingpdf/pdfpageexport.action?pageId=<pageid>'}
 -- url: /spaces/flyingpdf/pdfpageexport.action | traceId: 16a4d71ffa52dd3d | userName: <user> | referer: https://<page URL>
2020-05-20 09:51:16,015 INFO [http-nio2-8011-exec-176] [atlassian.confluence.status.SystemErrorInformationLogger] writeToLog 
Request Unique ID : f4ca9720-b3c6-45ce-bd67-99772fc0b073
--------------------------
JVM Stats
--------------------------
usedMemory = 5479196696
usedMemoryInMegabytes = 5225
availableHeap = 5258221544
freeMemoryInMegabytes = 5014
allocatedHeap = 10737418240
freeAllocatedHeap = 5258221544
totalMemory = 10737418240
totalMemoryInMegabytes = 10240
availablePermGen = 0
maxPermGen = -1
maxHeap = 10737418240
usedHeap = 5479196696
freeMemory = 5258221544
usedPermGen = -1
--------------------------
Request Information
--------------------------
URL: https://<url>/500page.jsp
Scheme: https
Server: <conf url>
Port: 443
URI: /500page.jsp
Context Path: 
Servlet Path: /500page.jsp
Path Info: null
Query String: pageId=<pageid>
--------------------------
Attributes
--------------------------
javax.servlet.forward.request_uri: /spaces/flyingpdf/pdfpageexport.action
javax.servlet.forward.context_path: 
javax.servlet.forward.servlet_path: /spaces/flyingpdf/pdfpageexport.action
javax.servlet.forward.query_string: pageId=<pageid>
javax.servlet.forward.mapping: org.apache.catalina.core.ApplicationMapping$MappingImpl@5150bb26
javax.servlet.error.status_code: 500
com.atlassian.confluence.impl.profiling.DecoratorTimings: com.atlassian.confluence.impl.profiling.DecoratorTimings@7f75c544
com.opensymphony.sitemesh.APPLIED_ONCE: true
__cleanup_recursion_counter: 0
com.atlassian.confluence.util.message.MessagesDecoratorFilter__already_filtered__: true
com.atlassian.confluence.web.filter.validateparam.RequestParamValidationFilter_already_filtered: true
atlassian.core.seraph.original.url: /500page.jsp?pageId=<pageid>
com.atlassian.labs.botkiller.BotKillerFilter: true
com.atlassian.gzipfilter.GzipFilter_already_filtered: true
Confluence-Request-Time: 1589982495553
com.atlassian.confluence.web.ConfluenceJohnsonFilter_already_filtered: true
com.atlassian.seraph.auth.LoginReason: OK
confluence.messages: {websudo-message=com.atlassian.confluence.security.websudo.WebSudoMessage@6044c346}
bigpipe.macro.execution.flag: []
webwork.valueStack: com.opensymphony.xwork.util.OgnlValueStack@7f4664b2
confluence.themecontext: com.atlassian.confluence.themes.ThemeContext@2b1b79f7
javax.servlet.error.message: 
javax.servlet.error.servlet_name: action
com.opensymphony.sitemesh.USINGSTREAM: false
B3-TraceId: 2f63cdd1f7540e
loginfilter.already.filtered: true
javax.servlet.jsp.jspException: java.lang.RuntimeException: com.atlassian.confluence.importexport.ImportExportException: We couldn't complete your export. The page "<page title>" took too long to convert. <a href="https://docs.atlassian.com/confluence/docs-613/PDF+export+in+Confluence+Data+Center">Learn more</a>
javax.servlet.error.request_uri: /spaces/flyingpdf/pdfpageexport.action
com.atlassian.core.filters.HeaderSanitisingFilter_already_filtered: true
com.atlassian.prettyurls.filter.PrettyUrlsSiteMeshFixupFilter: true
com.comalatech.pageapprovals: com.comalatech.confluence.workflow.DefaultWorkflowAccessor$PageWorkflowsContainer@7a15c635
javax.servlet.error.exception: java.lang.RuntimeException: com.atlassian.confluence.importexport.ImportExportException: We couldn't complete your export. The page "<page title>" took too long to convert. <a href="https://docs.atlassian.com/confluence/docs-613/PDF+export+in+Confluence+Data+Center">Learn more</a>
os_securityfilter_already_filtered: true
com.atlassian.prettyurls.filter.PrettyUrlsSiteMeshFilter: true
com.atlassian.confluence.util.profiling.ConfluenceProfilingStrategy.splits: []
--------------------------
Parameters
--------------------------
pageId : <pageid>
caused by: java.lang.RuntimeException: com.atlassian.confluence.importexport.ImportExportException: We couldn't complete your export. The page "<page title>" took too long to convert. <a href="https://docs.atlassian.com/confluence/docs-613/PDF+export+in+Confluence+Data+Center">Learn more</a>
at com.atlassian.confluence.extra.flyingpdf.ExportPageAsPdfAction.doExecute(ExportPageAsPdfAction.java:52)
caused by: com.atlassian.confluence.importexport.ImportExportException: We couldn't complete your export. The page "<page title>" took too long to convert. <a href="https://docs.atlassian.com/confluence/docs-613/PDF+export+in+Confluence+Data+Center">Learn more</a>
at com.atlassian.confluence.extra.flyingpdf.sandbox.SandboxXmlToPdfConverter.convertXhtmlToPdf(SandboxXmlToPdfConverter.java:81)
caused by: com.atlassian.confluence.util.sandbox.SandboxTimeoutException: Sandbox request has been killed because it exceeded time limit of 180 seconds
at com.atlassian.confluence.impl.util.sandbox.SandboxProcess.tryToThrowSpecificException(SandboxProcess.java:227)
caused by: java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:170)

Thread dumps of the Sandbox shows the following stuck thread:

org.xhtmlrenderer.pdf.ITextReplacedElementFactory.createReplacedElement(ITextReplacedElementFactory.java:59)
	at org.xhtmlrenderer.render.BlockBox.calcDimensions(BlockBox.java:716)
	at org.xhtmlrenderer.render.BlockBox.calcDimensions(BlockBox.java:666)
	at org.xhtmlrenderer.render.BlockBox.layout(BlockBox.java:809)
	at org.xhtmlrenderer.render.BlockBox.layout(BlockBox.java:776)
	at org.xhtmlrenderer.layout.InlineBoxing.layoutInlineBlockContent(InlineBoxing.java:421)
	at org.xhtmlrenderer.layout.InlineBoxing.layoutContent(InlineBoxing.java:318)
	at org.xhtmlrenderer.render.BlockBox.layoutInlineChildren(BlockBox.java:983)
	at org.xhtmlrenderer.render.BlockBox.layoutChildren(BlockBox.java:964)
	at org.xhtmlrenderer.render.BlockBox.layout(BlockBox.java:847)
	at org.xhtmlrenderer.render.BlockBox.layout(BlockBox.java:776)
	at org.xhtmlrenderer.layout.BlockBoxing.layoutBlockChild0(BlockBoxing.java:321)
	at org.xhtmlrenderer.layout.BlockBoxing.layoutBlockChild(BlockBoxing.java:299)
	at org.xhtmlrenderer.layout.BlockBoxing.layoutContent(BlockBoxing.java:90)
	at org.xhtmlrenderer.render.BlockBox.layoutChildren(BlockBox.java:967)

Workaround

Edit the page using the Confluence Source Editor, and remove the references to the images

is duplicated by

CONFSERVER-60591 PDF export hangs in Confluence when external image URL destination connection hangs

Closed

CONFSERVER-78139 PDF export hangs in Confluence when external image URL destination is not accessible

Closed

mentioned in: Page Loading...; Page Loading...; Page Loading...; Page Loading...; Page Loading...; Page Loading...; Page Loading...

(4 mentioned in)

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