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Xiaoyu Yao commented on HADOOP-12985: ------------------------------------- [~jnp], the TopN was shared by RollingWindowManager and the MetricsSource for DecayRpcScheduler. > Support MetricsSource interface for DecayRpcScheduler Metrics > ------------------------------------------------------------- > > Key: HADOOP-12985 > URL: https://issues.apache.org/jira/browse/HADOOP-12985 > Project: Hadoop Common > Issue Type: Improvement > Reporter: Xiaoyu Yao > Assignee: Xiaoyu Yao > Attachments: HADOOP-12985.00.patch, HADOOP-12985.02.patch, > HADOOP-12985.03.patch, HADOOP-12985.04.patch, HADOOP-12985.05.patch, > HADOOP-12985.06.patch > > > This allows metrics collector such as AMS to collect it with MetricsSink. The > per user RPC call counts, schedule decisions and per priority response time > will be useful to detect and trouble shoot Hadoop RPC server such as Namenode > overload issues. -- This message was sent by Atlassian JIRA (v6.3.4#6332)