Mine_Orange created SOLR-12807:
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Summary: out of memory error due to a lot of zk watchers in solr
cloud
Key: SOLR-12807
URL: https://issues.apache.org/jira/browse/SOLR-12807
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: SolrCloud
Affects Versions: 6.1
Reporter: Mine_Orange
Analyzing the dump file,we found a lot of watchers in childWatches of
ZKWatchManager,nearly 1.8G,the znode of childWatches is
/overseer/collection-queue-work,confirm that it is not because of the frequent
use of collection API and the network is normal.
The instance is the overseer leader of a solr cluster and did not restart for
more than a year,suspect that the watchers grow with time.
Our solr version is 6.1 and zookeeper version is 3.4.9.
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