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https://issues.apache.org/jira/browse/KUDU-2160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16183149#comment-16183149
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Mike Percy commented on KUDU-2160:
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Ah, I suppose they are the same. I'll mark this as a dup.
> Reduce UpdateConsensus RPC timeouts
> -----------------------------------
>
> Key: KUDU-2160
> URL: https://issues.apache.org/jira/browse/KUDU-2160
> Project: Kudu
> Issue Type: Bug
> Components: consensus
> Affects Versions: 1.5.0
> Reporter: Mike Percy
>
> We will often see many UpdateConsensus() RPC calls time out when disks are
> slow. We need to investigate this issue further and understand the dynamics
> better, then find a solution.
> When the local disks on a Kudu cluster get overloaded, RaftConsensus metadata
> fsyncs caused by Raft votes and term changes take longer, which causes the
> RaftConsensus lock to be held. This causes "stacking" of UpdateConsensus()
> RPCs, resulting in timeouts.
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