Tomas Eduardo Fernandez Lobbe created SOLR-16783:
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Summary: Race condition deleting clusterstate.json can prevent
Solr from starting
Key: SOLR-16783
URL: https://issues.apache.org/jira/browse/SOLR-16783
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Tomas Eduardo Fernandez Lobbe
ZkController attempts to delete the deprecated {{clusterstate.json}} file from
ZooKeeper if empty on startup. If multiple instances attempt to delete it at
the same time one of them will succeed and the others will fail with
`NoNodeException`, which bubbles up and causes the instant to fail startup,
requiring another restart
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