Problem Loading Screens

Renato Marcello dos Reis shared this question 10 months ago
Answered

Hi everyone,


I'm getting an issue when trying to load some pages on Yellowfin. The pages just keeps loading and the only thing I could do is to reload the page, but when I do this, the system returns to login screen. It doesn't happen with a particular screen, but with almost all pages. The only error I found was on log file and it's described below:


03-Apr-2018 16:01:53.271 GRAVE [http-nio-8087-exec-2] org.apache.coyote.http11.Http11Processor.endRequest Error finishing response

java.lang.NullPointerException

at org.apache.coyote.http11.Http11OutputBuffer.flushBuffer(Http11OutputBuffer.java:514)

at org.apache.coyote.http11.Http11OutputBuffer.finishResponse(Http11OutputBuffer.java:301)

at org.apache.coyote.http11.Http11Processor.endRequest(Http11Processor.java:1459)

at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:824)

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Unknown Source)


Can someone help me?

Comments (6)

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Allow me to add some information:


Operational System: Windows 10 Pro x64 (Used for test purpose)

JDK (Java Development Kit) Version 8 Update 162 Both x86 and x64 Versions

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Hi Renato,

unfortunately we haven't heard of such an error before. It looks like it's a Tomcat problem rather than Yellowfin.

Could you please send us the results of info.jsp (http://<server>:<port>/info.jsp)

And also please send us the complete set of logs at <yellowfin>\appserver\logs


regards,

David

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Hi David,


Thanks for helping me. Here are the info you asked.


PS: The info.jsp will be attached because there are a lot of text to just paste here.

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The System seems to work fine on a Windows 7 Platform. Is there an issue on using Windows 10 reported by anyone else? The problem is that I can't downgrade the System on this computer.

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Hi David,


First of all, thanks a lot for your help.

I figured out how to solve my problem and the solution is at follows.


When we install Yellowfin 7.3, the version of apache included is 8.5.5, and this version has some issues on Windows 10 platform. The problem was solved by upgrading apache to 8.5.29.

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Hi Renato,

well done! That's very helpful knowledge you are passing on, I am sure that it will help other clients in the future.

Great problem solving and thanks for sharing your discovery with us.

regards,

David