[HDFS-7331] Add Datanode network counts to datanode jmx page

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.7.0
• Component/s: datanode
• Target Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Charles Lamb
• Reporter: Charles Lamb
• Created: 04/Nov/14 00:19
• Updated: 10/Apr/15 20:30
• Resolved: 22/Nov/14 00:37

Description

Add per-datanode counts to the datanode jmx page. For example, networkErrors could be exposed like this:

  }, {
...
    "DatanodeNetworkCounts" : "{\"dn1\":{\"networkErrors\":1}}",
...
    "NamenodeAddresses" : "{\"localhost\":\"BP-1103235125-127.0.0.1-1415057084497\"}",
    "VolumeInfo" : "{\"/tmp/hadoop-cwl/dfs/data/current\":{\"freeSpace\":3092725760,\"usedSpace\":28672,\"reservedSpace\":0}}",
    "ClusterId" : "CID-4b38f2ae-5e58-4e15-b3cf-3ba3f46e724e"
  }, {