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https://issues.apache.org/jira/browse/HADOOP-18364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17570904#comment-17570904
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Xiaoqiao He commented on HADOOP-18364:
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[~zhangshuyan] Thanks for your report. Move this ticket to common project, and
involve you to contributor group then assign this ticket back to you.
> All method metrics related to the rpc protocol should be initialized
> --------------------------------------------------------------------
>
> Key: HADOOP-18364
> URL: https://issues.apache.org/jira/browse/HADOOP-18364
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Shuyan Zhang
> Assignee: Shuyan Zhang
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When an RPC protocol is used, the metric of protocol-related methods should
> be initialized; otherwise, metric information will be incomplete. For
> example, when we call HAServiceProtocol#monitorHealth(), only the metric of
> monitorHealth() are initialized, and the metric of transitionToStandby() are
> still not reported. This incompleteness caused a little trouble for our
> monitoring system.
> The root cause is that the parameter passed by RpcEngine to
> MutableRatesWithAggregation#init(java.lang.Class<?>) is always
> XXXProtocolPB, which is inherited from BlockingInterface and does not
> implement any methods. We should fix this bug.
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