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https://issues.apache.org/jira/browse/SOLR-6673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ishan Chattopadhyaya updated SOLR-6673:
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Attachment: SOLR-6673.patch
@Erik, Thanks for your review.
Added MDC.clear() everywhere before starting out. Although, this might be a bit
conservative, but seemed safer. In many places, only a collection name is
stamped to MDC, but a stale shard name stamped to the MDC, remnants of some
previous stamping in the same thread, should be cleared.
Also, added collection, shard stamping to the constructor of the
ShardLeaderElectionContextBase.
> 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
> Labels: logging
> Attachments: MDC.patch, SOLR-6673.patch, 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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