Solr: how to turn down logging

Question

OK, so I'm thrilled with Solr, but I can't seem to figure out how to turn down the logging level so that it will actually run acceptably fast when I do a huge import run.

I'm not even sure which logging framework it's using (because, you know, java.util.logging, log4j and commons-logging weren't enough, we needed to add slf4j to the mix!) OK sorry, had to let that minor rant slip. :-)

So I have src/main/resources/log4j.properties configured with:

log4j.rootLogger=WARN, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.conversionPattern=%5p [%t] (%F:%L) - %m%n
org.apache.solr.core=WARN
org.apache.solr.update.processor=WARN

And then for good measure I have src/main/resources/logging.properties configured with:

.level = WARNING

com.gwtstore.level=ALL
com.appgravity.level=ALL
org.apache.solr.core.level=WARNING
org.apache.solr.update.processor.level=WARNING

And yet somehow, I am still seeing tons of the following:

INFO: {add=[-7757828706308755634]} 0 0
Feb 21, 2011 6:12:23 PM org.apache.solr.core.SolrCore execute
INFO: [] webapp=null path=/update params={} status=0 QTime=0 

Here's my classpath:

src/test/resources
src/test/java
src/main/resources
src/main/java
idea_rt.jar
junit-rt.jar
deploy.jar
dt.jar
javaws.jar
jce.jar
jconsole.jar
management-agent.jar
plugin.jar
sa-jdi.jar
alt-rt.jar
charsets.jar
classes.jar
jsse.jar
ui.jar
apple_provider.jar
dnsns.jar
localedata.jar
sunjce_provider.jar
sunpkcs11.jar
test-classes
classes
junit-4.8.2.jar
gwt-user-2.1.1.jar
gwt-servlet-2.1.1.jar
servlet-api-2.5.jar
weld-servlet-1.1.0.Final.jar
hibernate-core-3.6.0.Final.jar
antlr-2.7.6.jar
commons-collections-3.2.1.jar
dom4j-1.6.1.jar
hibernate-commons-annotations-3.2.0.Final.jar
slf4j-api-1.6.0.jar
hibernate-jpa-2.0-api-1.0.0.Final.jar
jta-1.1.jar
hibernate-entitymanager-3.6.0.Final.jar
javassist-3.12.0.GA.jar
hibernate-c3p0-3.3.1.GA.jar
c3p0-0.9.1.jar
hibernate-validator-4.1.0.Final.jar
validation-api-1.0.0.GA.jar
cglib-nodep-2.2.jar
javax.inject-1.jar
cdi-api-1.0.jar
jboss-interceptor-api-1.1.jar
jsr250-api-1.0.jar
lucene-core-2.9.1.jar
lucene-snowball-2.9.1.jar
mongo-java-driver-2.4.jar
mysql-connector-java-5.1.6.jar
protobuf-java-2.2.0.jar
proxytoys-1.0.jar
quartz-1.8.4.jar
commons-lang-2.5.jar
commons-httpclient-3.1.jar
commons-logging-1.0.4.jar
commons-codec-1.2.jar
nekohtml-1.9.7.jar
xercesImpl-2.8.1.jar
xml-apis-1.3.03.jar
gwtquickstarter.jar
solr-solrj-1.4.1.jar
commons-io-1.4.jar
commons-fileupload-1.2.1.jar
wstx-asl-3.2.7.jar
stax-api-1.0.1.jar
geronimo-stax-api_1.0_spec-1.0.1.jar
solr-core-1.4.1.jar
lucene-analyzers-2.9.3.jar
lucene-highlighter-2.9.3.jar
lucene-memory-2.9.3.jar
lucene-queries-2.9.3.jar
lucene-misc-2.9.3.jar
lucene-spellchecker-2.9.3.jar
solr-commons-csv-1.4.1.jar
wstx-asl-3.2.7.jar
morphia-0.98s10.jar
androidmarketapi-0.5.jar
openid4java-0.9.5.jar

Answer 1

1. You need to make sure that the logging properties file is deployed to .../yourWebapp/WEB-INF/classes/log4j.properties.

2. If there is a .../yourWebapp/WEB-INF/classes/log4j.xml file, this will override the properties file.

3. The location of the Log4j configuration file can also be overridden by system properties.

For more information on how Log4j gets its configuration, look at this section of the Log4j introduction.

Answer 2

If you are just looking to turn off logging completely from the Solr server , just visit http://(YOUR-IP):8080/solr/admin and navigate to the logging option seen on top list.

On that page , you could find the detailed table for the various logging levels defined for your Solr installation. Either change their parent logger to make them use the logger you are using in your application or turn them off entirely.

Hope this is what you were looking for. Thanks