Mark Miller created SOLR-12268:
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Summary: Opening a new NRT Searcher can take a while and block
calls to /admin/cores.
Key: SOLR-12268
URL: https://issues.apache.org/jira/browse/SOLR-12268
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Mark Miller
When we open a new reader from a writer, we get an IndexWriter lock and may
call applyAllDeletesAndUpdates. That call can take a while holding the lock.
Meanwhile calls coming to /admin/cores get isCurrent for the reader, which
checks if the IndexWriter is closed, which requires the IndexWriter lock. These
leads to /admin/cores calls taking as long as applyAllDeletesAndUpdates.
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