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From "Ishan Chattopadhyaya (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-6673) MDC based logging of collection, shard etc.
Date Wed, 02 Dec 2015 23:14:11 GMT

    [ https://issues.apache.org/jira/browse/SOLR-6673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15036845#comment-15036845
] 

Ishan Chattopadhyaya commented on SOLR-6673:
--------------------------------------------

Good catch, we should document it.
Maybe https://cwiki.apache.org/confluence/display/solr/Logging or https://cwiki.apache.org/confluence/display/solr/Configuring+Logging.
I can take a look in ~2 days, unless someone else wants to take it up and/or beats me to it.

> MDC based logging of collection, shard etc.
> -------------------------------------------
>
>                 Key: SOLR-6673
>                 URL: https://issues.apache.org/jira/browse/SOLR-6673
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Ishan Chattopadhyaya
>            Assignee: Noble Paul
>              Labels: logging
>             Fix For: 5.1, Trunk
>
>         Attachments: SOLR-6673-log-more.patch, SOLR-6673.patch, SOLR-6673.patch, SOLR-6673.patch,
SOLR-6673.patch, SOLR-6673.patch, SOLR-6673.patch, SOLR-6673.patch, SOLR-6673.patch, SOLR-6673_NPE_fix.patch,
log4j.properties, log4j.properties
>
>
> In cloud mode, the many log items don't contain the collection name, shard name, core
name etc. Debugging becomes specially difficult when many collections/shards are hosted on
the same node.
> The proposed solution adds MDC based stamping of collection, shard, core to the thread.

> See also: SOLR-5969, SOLR-5277



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