Ahmed Hussein created HDFS-14524:
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Summary: NNTop total counts does not add up as expected
Key: HDFS-14524
URL: https://issues.apache.org/jira/browse/HDFS-14524
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Ahmed Hussein
Assignee: Ahmed Hussein
{{opType='*'}} is sometimes smaller than the sum of the individual operation
types.
{code}
{
"windows": [
{
"windowLenMs": 300000,
"ops": [
{
"totalCount": 24158,
"opType": "rpc.complete",
"topUsers": [{ "count": 2944, "user": "user1" }]
},
{
"totalCount": 15921,
"opType": "rpc.rename",
"topUsers": [{ "count": 2891, "user": "user1" }]
},
{
"totalCount": 3015834,
"opType": "*",
"topUsers": [{ "count": 66652, "user": "user1" }]
},
{
"totalCount": 2086,
"opType": "rpc.abandonBlock",
"topUsers": [{ "count": 603, "user": "user1" }]
},
{
"totalCount": 30258,
"opType": "rpc.addBlock",
"topUsers": [{ "count": 3182, "user": "user1" }]
},
{
"totalCount": 101440,
"opType": "rpc.getServerDefaults",
"topUsers": [{ "count": 3521, "user": "user1" }]
},
{
"totalCount": 25258,
"opType": "rpc.create",
"topUsers": [{ "count": 1864, "user": "user1" }]
},
{
"totalCount": 1377563,
"opType": "rpc.getFileInfo",
"topUsers": [{ "count": 56541, "user": "user1" }]
},
{
"totalCount": 60836,
"opType": "rpc.renewLease",
"topUsers": [{ "count": 3783, "user": "user1" }]
},
{
"totalCount": 182212,
"opType": "rpc.getListing",
"topUsers": [{ "count": 1848, "user": "user1" }]
},
{
"totalCount": 380,
"opType": "rpc.updateBlockForPipeline",
"topUsers": [{ "count": 58, "user": "user1" }]
},
{
"totalCount": 215,
"opType": "rpc.updatePipeline",
"topUsers": [{ "count": 18, "user": "user1" }]
}
]
}
],
"timestamp": "2019-01-12"
}
{code}
{{opType='\*'}} from user {{user1}} is {{66652}}, but the sum of counts for
other {{optype}} values by {{user1}} is actually larger: {{77253}}
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