Haibin Huang created HDFS-15666:
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Summary: add average latency information to the SlowPeerReport
Key: HDFS-15666
URL: https://issues.apache.org/jira/browse/HDFS-15666
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs
Reporter: Haibin Huang
Assignee: Haibin Huang
In namenode's jmx, there is a SlowDisksReport like this:
{code:java}
[{"SlowDiskID":"dn3:disk1","Latencies":{"WRITE":1000.1}},{"SlowDiskID":"dn2:disk2","Latencies":{"WRITE":1000.1}},{"SlowDiskID":"dn1:disk2","Latencies":{"READ":1000.3}},{"SlowDiskID":"dn1:disk1","Latencies":{"METADATA":1000.1,"READ":1000.8}}]
{code}
So we can know the disk io letency from this report.However, SlowPeersReport
dosen't have average latency:
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