[
https://issues.apache.org/jira/browse/SOLR-3358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13256739#comment-13256739
]
Uwe Schindler commented on SOLR-3358:
-------------------------------------
Ryan: But you have now a classpath conflict. Depending on the order of jar
files in filesystem and order of jar files resulting by that undefinedness, it
can happen that log4j events are no longer transferred to slf4j (if user does
*not* use log4j).
The log4j-over-slf is just a "catcher" for compatibility with external libs
bundeled with Solr, that use log4j as their logging framework (it emulates
log4j). The user has to sort out what chains he need to get correct logging,
means: slf4 main jar, the delegator to log4j and log4j to do the actual work,
or alternatively log4j-over-slf4j (to catch 3rd party logging events) and sl4fj
(like it was before), that will log to JUL or nowhere. Theoretically maybe
commons-logging cather is also needed for some 3rd party libs like
commons-digester.
*I would like that we revert this commit and discuss the logging again!* This
will be a pain for all WAR users and is already wrong because of duplicate
class files in classpath leading to bugs or maybe even stack overflows because
of logging-loops (I have seen that already, one logging framework delegates to
another one and finally to itsself).
> Capture Logging Events from JUL and Log4j
> -----------------------------------------
>
> Key: SOLR-3358
> URL: https://issues.apache.org/jira/browse/SOLR-3358
> Project: Solr
> Issue Type: New Feature
> Reporter: Ryan McKinley
> Assignee: Ryan McKinley
> Attachments: SOLR-3358-compile-path.patch, SOLR-3358-logging.patch,
> SOLR-3358-logging.patch
>
>
> The UI should be able to show the last few log messages. To support this, we
> will need to register an Appender (log4j) or Handler
> (JUL) and keep a buffer of recent log events.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
