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https://issues.apache.org/jira/browse/KUDU-1701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17123748#comment-17123748
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Grant Henke commented on KUDU-1701:
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[~aserbin] Is this resolved by
https://github.com/apache/kudu/commit/14912a1fd78ba7cf4d62bf934ae64d6f6f229ee6 ?
> Reduce contention in CatalogManager::ScopedLeaderSharedLock
> ------------------------------------------------------------
>
> Key: KUDU-1701
> URL: https://issues.apache.org/jira/browse/KUDU-1701
> Project: Kudu
> Issue Type: Improvement
> Components: master
> Affects Versions: 1.0.0
> Reporter: Todd Lipcon
> Assignee: Alexey Serbin
> Priority: Minor
>
> CatalogManager::ScopedLeaderSharedLock::ScopedLeaderSharedLock() currently
> holds a spinlock while accessing consensus->ConsensusState(). That call makes
> a copy of a protobuf, which requires allocation and a later deallocation.
> Every master lookup RPC needs to go through this path, so this can become a
> contention point under heavy multi-client load.
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