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Posted to hdfs-dev@hadoop.apache.org by "Jiandan Yang (JIRA)" <ji...@apache.org> on 2018/11/02 03:25:00 UTC
[jira] [Created] (HDFS-14045) Use different metrics in DataNode to
better measure latency of heartbeat/blockReports/incrementalBlockReports of
Active/Standby NN
Jiandan Yang created HDFS-14045:
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Summary: Use different metrics in DataNode to better measure latency of heartbeat/blockReports/incrementalBlockReports of Active/Standby NN
Key: HDFS-14045
URL: https://issues.apache.org/jira/browse/HDFS-14045
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Reporter: Jiandan Yang
Currently DataNode uses same metrics to measure rpc latency of NameNode, but Active and Standby usually have different performance at the same time, especially in large cluster. For example, rpc latency of Standby is very long when Standby is catching up editlog. We may misunderstand the state of HDFS. Using different metrics for Active and standby can help us obtain more precise metric data.
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