Jinglun created HDFS-15176:
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Summary: Enable GcTimePercentage Metric in NameNode's JvmMetrics.
Key: HDFS-15176
URL: https://issues.apache.org/jira/browse/HDFS-15176
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Jinglun
Assignee: Jinglun
The GcTimePercentage(computed by GcTimeMonitor) could be used as a dimension to
analyze the NameNode GC. We should add a switch config to enable the
GcTimePercentage metric in HDFS.
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