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https://issues.apache.org/jira/browse/SOLR-6677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15502713#comment-15502713
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Jan Høydahl commented on SOLR-6677:
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bq. What if logging parameters of the request was an UpdateRequestProcessor?
I don't see how URP is related to reducing logging during startup?
I think this issue should be about moving a ton of INFO level logs to DEBUG
level so the normal case startup looks more like this
{noformat}
> bin/solr start
Starting Solr on port 8983 from /Users/janhoy/git/lucene-solr/solr/server
190 INFO (main) [ ] o.e.j.s.Server jetty-9.3.8.v20160314
446 INFO (main) [ ] o.a.s.c.SolrResourceLoader using system property
solr.solr.home: /Users/janhoy/git/lucene-solr/solr/server/solr
453 INFO (main) [ ] o.a.s.c.SolrXmlConfig Loading container configuration
from /Users/janhoy/git/lucene-solr/solr/server/solr/solr.xml
596 INFO (main) [ ] o.a.s.c.CoreContainer Loaded 3 cores: [foo, bar, baz],
[instanceDir=/Users/janhoy/git/lucene-solr/solr/server/solr]
924 INFO (main) [ ] o.e.j.s.h.ContextHandler Started
o.e.j.w.WebAppContext@6536e911{/solr,file:///Users/janhoy/git/lucene-solr/solr/server/solr-webapp/webapp/,AVAILABLE}{/Users/janhoy/git/lucene-solr/solr/server/solr-webapp/webapp}
946 INFO (main) [ ] o.e.j.s.ServerConnector Started
ServerConnector@683dbc2c{HTTP/1.1,[http/1.1]}{0.0.0.0:8983}
946 INFO (main) [ ] o.e.j.s.Server Started @1338ms
{noformat}
EVERYTHING that does not add value to the normal-path should not be logged. If
someone needs to debug they can turn on debugging. And we should probably make
it easier to enable debugging as well, i.e. through a {{bin/solr start -v}}
argument which somehow changes the loglevel to {{DEBUG}}. In the same fashion
we could add a {{-q}} argument which changes loglevel to {{WARN}}. Perhaps
there could be a REST admin API to do the same without fiddling with
log4j.properties, coupled with a new {{bin/solr loglevel <level>}} convenience
CLI to change the loglevel of the running instance?
> reduce logging during Solr startup
> ----------------------------------
>
> Key: SOLR-6677
> URL: https://issues.apache.org/jira/browse/SOLR-6677
> Project: Solr
> Issue Type: Bug
> Reporter: Noble Paul
> Assignee: Noble Paul
>
> most of what is printed is neither helpful nor useful. It's just noise
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