David Smiley created SOLR-14374:
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Summary: Use coreLoadExecutor to load all cores; not just startup
Key: SOLR-14374
URL: https://issues.apache.org/jira/browse/SOLR-14374
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Reporter: David Smiley
Assignee: David Smiley
CoreContainer.load() creates coreLoadExecutor (an Executor) to load
pre-existing cores concurrently -- defaulting to 8 at a time. Then it's never
used again. However, cores might be loaded in other circumstances: (a)
creating new cores, (b) "transient" cores, or (c) loadOnStartup=false cores,
(d) reload cores. By using coreLoadExecutor for all cases, we'll then have
metrics for core loading that work globally and not just on startup since
coreLoadExecutor is instrumented already --
{{CONTAINER.threadPool.coreLoadExecutor}} metrics path.
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