[jira] [Created] (SOLR-5900) Improve ZkController#checkOverseerDesignate

["Mark Miller (JIRA)" <ji...@apache.org>]

Mark Miller created SOLR-5900:
---------------------------------

             Summary: Improve ZkController#checkOverseerDesignate
                 Key: SOLR-5900
                 URL: https://issues.apache.org/jira/browse/SOLR-5900
             Project: Solr
          Issue Type: Improvement
            Reporter: Mark Miller
            Priority: Minor


I see the following in the logs because the roles nodes does not exist - seems that we should ensure this node exists or treat it's non existence as being empty with no warning:
{noformat}
3955 T11 oasc.ZkController.checkOverseerDesignate WARN could not readd the overseer designate  org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /roles.json
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
	at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
	at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:276)
	at org.apache.solr.common.cloud.SolrZkClient$7.execute(SolrZkClient.java:1)
	at org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:73)
	at org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:273)
	at org.apache.solr.cloud.ZkController.checkOverseerDesignate(ZkController.java:1672)
	at org.apache.solr.core.CoreContainer.load(CoreContainer.java:350)
	at org.apache.solr.servlet.SolrDispatchFilter.createCoreContainer(SolrDispatchFilter.java:200)
	at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:147)
	at org.eclipse.jetty.servlet.FilterHolder.doStart(FilterHolder.java:119)
{noformat}



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