Hello,

I thank you for your feedback and the information about the kylin.properties 
file, which gives lots of information.

To answer your question, here is the result of the 
./bin/find-hadoop-conf-dir.sh –v command

bellierjlu@node2:~$ $KYLIN_HOME/bin/find-hadoop-conf-dir.sh -v
Turn on verbose mode.
Retrieving hadoop conf dir...
/opt/cloudera/parcels/CDH-5.12.0-1.cdh5.12.0.p0.29/lib/hbase/bin/../conf is not 
valid hadoop dir conf because yarn-site.xml is missing
/opt/cloudera/parcels/CDH-5.12.0-1.cdh5.12.0.p0.29/lib/hbase/bin/.. is not 
valid hadoop dir conf because yarn-site.xml is missing
kylin_hadoop_conf_dir is /etc/hadoop/conf
bellierjlu@node2:~$

Could this be the cause of the problem ?

Thank you in advance for your help.

Best regards,
Jean-Luc.

De : ShaoFeng Shi [mailto:shaofeng...@apache.org]
Envoyé : mardi 6 février 2018 01:45
À : user <user@kylin.apache.org>
Objet : Re: Problem starting Kylin Web interface

Hi Jean-Luc,

Kylin's metadata is persisted in HBase, the metadata table is "kylin_metadata" 
by default, which is also configurable in conf/kylin.properties with key 
kylin.metadata.url;
The HDFS path '/kylin/kylin_metadata' is for the cube and other files; Before 
you build the first cube, the folder is empty I think.

If sample.sh couldn't create the /tmp/kylin folder on HDFS; If the folder 
wasn't create, Kylin might not find the Hadoop config properly. You can run:


./bin/find-hadoop-conf-dir.sh -v



to see what it prints.




2018-02-05 23:24 GMT+08:00 BELLIER Jean-luc 
<jean-luc.bell...@rte-france.com<mailto:jean-luc.bell...@rte-france.com>>:
Hello,

I am sorry to come back again to you, but I am really stuck. I restarted all 
the services and agents on my Cloudera cluster, so it is OK now.
I noticed that some HDFS directories were empty, especially /tmp/kylin. When I 
have a look on the code of sample.sh, I can see that this script should create 
sthe subfolder /tmp/kylin/sample_cube/data. These data are used to create the 
Hive tables and are removed after the creation of these tables.  Let call the 
node N1

I have another machine on which Kylin is installed and I succeeded in launching 
sample.sh. On this machine, I can see a HDFS folder called 
/kylin/kylin_metadata with, I presume, the metadata of the cube stored in it.

I cannot succeed in creating this folder on N1. I removed the /tmp/kylin 
folder, the hbase table and the Hive tables.
I really do not know what to do to restart the creation of the project from 
scratch.
I also checked the HDFS space using the command ‘hdfs dfs –df’ and it tells me 
a usage of 2%.

Could you please guide me in how to achieve it. There may be something I did 
wrong, but I really do not what. Is my way of doing correct ? Are there  other 
files to remove (temporary files, for example), and in this case, where are 
they located ?

Any help would be greatly appreciated.

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

Best regards,
Jean-Luc.

De : BELLIER Jean-luc
Envoyé : vendredi 2 février 2018 18:54
À : user <user@kylin.apache.org<mailto:user@kylin.apache.org>>
Objet : RE: Problem starting Kylin Web interface

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:shaofeng...@apache.org]
Envoyé : vendredi 2 février 2018 14:59

À : user <user@kylin.apache.org<mailto: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.bell...@rte-france.com<mailto:jean-luc.bell...@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:shaofeng...@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.bell...@rte-france.com<mailto:jean-luc.bell...@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 
bellier...@hades.rte-france.com<mailto:bellier...@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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de ne pas le transmettre et de procéder à sa destruction.

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which it is addressed and may contain information that is privileged or 
confidential. If you have received this communication by error, please notify 
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Best regards,

Shaofeng Shi 史少锋



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de ne pas le transmettre et de procéder à sa destruction.

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