ZanderXu created HADOOP-18446:
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Summary: Add a reQueue metric to RpcMetrics.java to quantify the
number of RPCs in ReQueue
Key: HADOOP-18446
URL: https://issues.apache.org/jira/browse/HADOOP-18446
Project: Hadoop Common
Issue Type: Improvement
Reporter: ZanderXu
Assignee: ZanderXu
Add a reQueue metric to RpcMetrics.java to quantify the number of RPCs reQueued.
Because Observer NameNode will re-queue the rpc if the call processing should
be postponed.
There is no any metric to quantify the number of re-queue RPCs, so I think we
should do it.
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