Raintung Li created SOLR-4129:
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Summary: Solr doesn't support log4j
Key: SOLR-4129
URL: https://issues.apache.org/jira/browse/SOLR-4129
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 4.0, 4.0-BETA, 4.0-ALPHA
Reporter: Raintung Li
For many project use the log4j, actually solr use slf logger framework, slf can
easy to integrate with log4j.
But 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. thread.info, day rolling
Some dependence project had been used log4j that the customer still want to use
it, that exist the configuration file. JDK14 log has many different with Log4j.
The bad thing is log4j-over-slf.jar conflict with log4j. The other project need
remove it log4j.
We shouldn't use log4j-over-slf.jar, still reuse log4j if customer want to use
it.
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