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https://issues.apache.org/jira/browse/SOLR-16416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17608380#comment-17608380
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ASF subversion and git services commented on SOLR-16416:
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Commit f529154f74078e9012be486a684bdd021072df72 in solr's branch
refs/heads/branch_9x from Houston Putman
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=f529154f740 ]
SOLR-16416: Add error logging to allow debugging of OverseerNodePrioritizer
(cherry picked from commit 0aa9b333d94f7573f83a414586f0ae34fe1c13a5)
> Fix silently failing Overseer Election joinAtHead during
> testDesignatedOverseerRestarts
> ---------------------------------------------------------------------------------------
>
> Key: SOLR-16416
> URL: https://issues.apache.org/jira/browse/SOLR-16416
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Houston Putman
> Priority: Major
>
> OverseerRolesTest.testDesignatedOverseerRestarts has been failing
> consistently (around 2.5% of the time). I think this is because
> LeaderElection.joinElection does not respect the joinAtHead flag, if
> connectionIssues happen while setting the leader election nodes.
> LeaderElection does not use the automatic retryOnConnLoss flags when doing zk
> operations. Instead, it waits for an error to come back, and it handles the
> retry itself. This is fine for the normal case, because it checks if node is
> represented in the leaderElection child nodes, and if so it ignores the
> connection loss. However when doing joinAtHead, if the childNode exists, but
> isn't at the place it should be, then the manual retry should be exercised.
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