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https://issues.apache.org/jira/browse/SOLR-9534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15505053#comment-15505053
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Jan Høydahl commented on SOLR-9534:
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The {{-q}} flag logs with WARN level. With this patch, it will produce this for
{{bin/solr start -f -q}}
{noformat}
Starting Solr on port 8983 from /Users/janhoy/git/lucene-solr/solr/server
0 INFO (main) [ ] o.e.j.s.Server jetty-9.3.8.v20160314
198 WARN (main) [ ] o.e.j.s.SecurityHandler
[email protected]@6536e911{/solr,file:///Users/janhoy/git/lucene-solr/solr/server/solr-webapp/webapp/,STARTING}{/Users/janhoy/git/lucene-solr/solr/server/solr-webapp/webapp}
has uncovered http methods for path: /
205 INFO (main) [ ] o.a.s.s.SolrDispatchFilter Log level override, property
solr.log.level=WARN
298 WARN (main) [ ] o.a.s.c.CoreContainer Couldn't add files from
/Users/janhoy/git/lucene-solr/solr/server/solr/lib to classpath:
/Users/janhoy/git/lucene-solr/solr/server/solr/lib
553 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}
566 INFO (main) [ ] o.e.j.s.ServerConnector Started
ServerConnector@57250572{HTTP/1.1,[http/1.1]}{0.0.0.0:8983}
567 INFO (main) [ ] o.e.j.s.Server Started @986ms
{noformat}
PS: The two WARN logs are removed over in SOLR-8186, as well as printing
date&time in console log.
A problem with just switching to WARN is that we pretty much mute everything
Solr has to say :) The easiest solution is to explicitly set log level to INFO
for a few selected Solr classes which we still want to see. Or long term
implement the ideas from SOLR-4132
> Support quiet/verbose bin/solr options for changing log level
> -------------------------------------------------------------
>
> Key: SOLR-9534
> URL: https://issues.apache.org/jira/browse/SOLR-9534
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: scripts and tools
> Affects Versions: 6.2
> Reporter: Jan Høydahl
> Assignee: Jan Høydahl
> Labels: logging
> Fix For: 6.3, master (7.0)
>
> Attachments: SOLR-9534.patch
>
>
> Spinoff from SOLR-6677
> Let's make it much easier to "turn on debug" by supporting a {{bin/solr start
> -V}} verbose option, and likewise a {{bin/solr start -q}} for quiet operation.
> These would simply be convenience options for changing the RootLogger from
> level INFO to DEBUG or WARN respectively. This can be done programmatically
> in log4j at startup.
> Could be we need to add some more package specific defaults in
> log4j.properties to get the right mix of logs
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