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From "Mark Miller (JIRA)" <>
Subject [jira] [Updated] (SOLR-4129) Solr doesn't support log4j
Date Fri, 30 Nov 2012 14:09:58 GMT


Mark Miller updated SOLR-4129:

    Fix Version/s: 5.0
> Solr doesn't support log4j 
> ---------------------------
>                 Key: SOLR-4129
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 4.0-ALPHA, 4.0-BETA, 4.0
>            Reporter: Raintung Li
>              Labels: log
>             Fix For: 4.1, 5.0
>         Attachments: patch-4129.txt
> For many project use the log4j, actually solr use slf logger framework, slf can easy
to integrate with log4j by design. 
> Solr use log4j-over-slf.jar to handle log4j case.
> This jar has some issues.
> a. Actually last invoke slf to print the logger (For solr it is JDK14.logging).
> b. Not implement all log4j function. ex. Logger.setLevel() 
> c. JDK14 log miss some function, ex., day rolling 
> Some dependence project had been used log4j that the customer still want to use it. JDK14
log has many different with Log4j, at least configuration file can't reuse.
> The bad thing is log4j-over-slf.jar conflict with log4j. If use solr, the other project
have to remove log4j.
> I think it shouldn't use log4j-over-slf.jar, still reuse log4j if customer want to use

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