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From BELLIER Jean-luc <jean-luc.bell...@rte-france.com>
Subject RE: Problem starting Kylin Web interface
Date Fri, 02 Feb 2018 17:54:04 GMT
Hello,

Thanks for the suggestion. I tried on another machine with Firefox and Chrome, but I get the
same result as before. I also rebuilt the project ‘sample’ from scratch, with no change.
My cluster seems to have problems on its nodes, especially memory which is nearly full on
most nodes.
I suspect this could be one of the cause of the problem : no available memory and swap space
also nearly full.

What do you think of this assumption ?

I will see that with my Cloudera manager next week, as I am not a specialist at all.

Have a good week-end.

Best regards,
Jean-Luc.


De : ShaoFeng Shi [mailto:shaofengshi@apache.org]
Envoyé : vendredi 2 février 2018 14:59
À : user <user@kylin.apache.org>
Objet : Re: Problem starting Kylin Web interface

Please try Chrome; Most developers are using Chrome; And if there is an error, you can press
F12 to check the HTTP request/response, there should be more information.

2018-02-02 21:54 GMT+08:00 BELLIER Jean-luc <jean-luc.bellier@rte-france.com<mailto:jean-luc.bellier@rte-france.com>>:
Hello again,

I forgot to mention that I use IE or Secured Firefox as Web browsers. I have the same issue
with both. Could there be the cause of the problem ?

Best regards
Jean-Luc.

De : BELLIER Jean-luc
Envoyé : vendredi 2 février 2018 14:48
À : user <user@kylin.apache.org<mailto:user@kylin.apache.org>>
Objet : RE: Problem starting Kylin Web interface

Hello

Thank you for your answer.
I did the following :

•         rename my current kylin.log and kylin.out files to keep a trace

•         restarted the commands ‘kylin.sh start’ and ‘sample.sh’
I cannot see anything special in the new .log or .out files. The Hive tables exist, and the
kylin_metadata also. I can scan it through Hbase shell command. It gives me 44  rows.

However, the problem is still the same with the Kylin Interface : Models loading indefinitely,
no table displayed, and nothing in the ‘System’ section. When I try to refresh the server
config and the server environement, I still have the message ‘Oops ! Failed to take action.
I also have this message as soon as I click to the ‘System’ button.

Should I rebuild the project from scratch to be sure that everything is correctly created,
or should I investigate somewhere else (services, node states, …) ?

I send in attachement the now kylin.log and kylin.out files
Thank you in advance for your help. Have a good day.

Best regards,
Jean-Luc.

De : ShaoFeng Shi [mailto:shaofengshi@apache.org]
Envoyé : vendredi 2 février 2018 12:06
À : user <user@kylin.apache.org<mailto:user@kylin.apache.org>>
Objet : Re: Problem starting Kylin Web interface

Hi Jean-luc,

The kylin.log seems okay, the service is started and the job scheduler is running up.

The kylin.out has some error about missing ".keystore", but by default if you accessing kylin
via http, it shouldn't need to load keystore. Please try visit http://host:7070/kylin again
to see whether there is any issue in the web console.

2018-02-01 23:17 GMT+08:00 BELLIER Jean-luc <jean-luc.bellier@rte-france.com<mailto:jean-luc.bellier@rte-france.com>>:
Hello,

I am new in Kylin. I would like to test it for a POC for my company. I opened a ticket yesterday
in the issues mail box through Jira, but I am not sure it is the best place.
Here is the reference of the ticket : https://issues.apache.org/jira/browse/KYLIN-3218

I am using  the version apache-kylin-2.2.0-bin-cdh57, with Linux. I installed the software
on a client node. I successfully started the process and created the cube given in the example
project.
Apparently, no mistake appears when starting the kylin.sh shell or generating the cube using
sample.sh.

When I launch the web interface using <nodename>:7070/kylin, I cannot load the models
(the cursor is turning indefinitely).
By looking at the kylin.out log, I could see that the process could not find the $KYLIN_HOME/tomcat/conf/.keystore
file. So I created it manually, and relaunched the cube generation and the ‘kylin.sh start’
command.
Now I face to other mistakes :


•         Exception in thread "Thread-14" java.lang.RuntimeException: Error while peeking
at /kylin/kylin_metadata/job_engine/global_job_engine_lock

•         SEVERE: The web application [/kylin] appears to have started a thread named [TGT
Renewer for bellierjlu@HADES.RTE-FRANCE.COM<mailto:bellierjlu@HADES.RTE-FRANCE.COM>]
but has failed to stop it. This is very likely to create a memory leak. This one appears several
times

•         SEVERE: The web application [/kylin] created a ThreadLocal with key of type [java.lang.ThreadLocal]
(value [java.lang.ThreadLocal@10cb8259]) and a value of type [org.apache.kylin.rest.msg.Message]
(value [org.apache.kylin.rest.msg.Message@267ae210]) but failed to remove it when the web
application was stopped. Threads are going to be renewed over time to try and avoid a probable
memory leak. This one appears several times


Apparently, something else is missing, or I did something wrong, but I do not know what. I
would also like to know what will be the impact of the two ‘SEVERE’ issues above and how
I could correct it.


I attach the last version of kylin.out file. Any help would be kindly appreciated.



Thank you in advance for your help. Have a good day.



Best regards.

Jean-Luc.




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Best regards,

Shaofeng Shi 史少锋



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Best regards,

Shaofeng Shi 史少锋



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