[jira] [Comment Edited] (FLINK-16478) add restApi to modify loglevel

["Xingxing Di (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-16478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17092471#comment-17092471 ] 

Xingxing Di edited comment on FLINK-16478 at 4/26/20, 4:13 AM:
---------------------------------------------------------------

Hi [~xiaodao] , [~felixzheng], i am glad to see this issue, and i created an duplicated  issue 

[FLINK-17382|https://issues.apache.org/jira/projects/FLINK/issues/FLINK-17382] earlier. 

We've already added a rest api to support *log4j* dynamic log level setting in flink 1.9 , i'm also interested in working on this issue. 

The query parameter is :
{code:java}
?params=jobManager|root|debug|30|info{code}
*Which means:* Change job manager's "root" logger's level to "debug", and after 30 seconds set it back to "info".

*More details:*
 type : jobManager or taskManager
 loggerName : the logger name
 level : ALL, TRACE, DEBUG, INFO, WARN, ERROR, FATAL ,OFF
 expireSecs : define a timer to set log level to the resetLevel after specific seconds
 resetLevel : the log level to set back, default is 'info'

Here is the code [1.9-log4j-level-setting|https://github.com/dixingxing0/flink/tree/1.9-log4j-level-setting].

It's only a simple version to support log4j, as the design by [~xiaodao], it should also work on logback and log4j2.

 


was (Author: dixingxing@yeah.net):
Hi [~xiaodao] , [~felixzheng], i am glad to see this issue, and i created an duplicated  issue earlier ([https://issues.apache.org/jira/projects/FLINK/issues/FLINK-17382]) 

We've already added a rest api to support *log4j* dynamic log level setting in flink 1.9 , i'm also interested in working on this issue. 

The query parameter is :
{code:java}
?params=jobManager|root|debug|30|info{code}
*Which means:* Change job manager's "root" logger's level to "debug", and after 30 seconds set it back to "info".

*More details:*
 type : jobManager or taskManager
 loggerName : the logger name
 level : ALL, TRACE, DEBUG, INFO, WARN, ERROR, FATAL ,OFF
 expireSecs : define a timer to set log level to the resetLevel after specific seconds
 resetLevel : the log level to set back, default is 'info'

Here is the code: [https://github.com/dixingxing0/flink/tree/1.9-log4j-level-setting]

It's only a simple version to support log4j, as the design by [~xiaodao], it should also work on logback and log4j2.

 

> add restApi to modify loglevel 
> -------------------------------
>
>                 Key: FLINK-16478
>                 URL: https://issues.apache.org/jira/browse/FLINK-16478
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / REST
>            Reporter: xiaodao
>            Priority: Minor
>
> sometimes we may need to change loglevel to get more information to resolved bug, now we need to stop it and modify conf/log4j.properties and resubmit it ,i think it's better to add rest api to modify loglevel.



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