[HBASE-23996] Many split related metrics were present RS side but after split is moved to Master, these metrics are lost.

• Type: Improvement
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.2.3
• Component/s: metrics
• Assignee: Sanjeet Nishad
• Reporter: Sanjeet Nishad
• Created: 16/Mar/20 20:50
• Updated: 09/Oct/21 08:17

Description

Many of the split related metrics like following are present RS side :

"SplitTime_num_ops": 0,
"SplitTime_min": 0,
"SplitTime_max": 0,
"SplitTime_mean": 0,
"SplitTime_25th_percentile": 0,
"SplitTime_median": 0,
"SplitTime_75th_percentile": 0,
"SplitTime_90th_percentile": 0,
"SplitTime_95th_percentile": 0,
"SplitTime_98th_percentile": 0,
"SplitTime_99th_percentile": 0,
"SplitTime_99.9th_percentile": 0,

Value of these will always be 0 since Split is happening Master side and there is no Metrics update. 

 

 

Update 1: After the fix, JMX is like this :

{ "name": "Hadoop:service=HBase,name=Master,sub=Procedure", "modelerType": "Master,sub=Procedure", "tag.Context": "master", "tag.Hostname": "blrphispra01257", "numMasterWALs": 0, "splitProcedure_RequestCount": 0, "splitProcedure_FailedCount": 0, "splitProcedure_SuccessCount": 0, "splitProcedureTime_num_ops": 0, "splitProcedureTime_min": 0, "splitProcedureTime_max": 0, "splitProcedureTime_mean": 0, "splitProcedureTime_25th_percentile": 0, "splitProcedureTime_median": 0, "splitProcedureTime_75th_percentile": 0, "splitProcedureTime_90th_percentile": 0, "splitProcedureTime_95th_percentile": 0, "splitProcedureTime_98th_percentile": 0, "splitProcedureTime_99th_percentile": 0, "splitProcedureTime_99.9th_percentile": 0 }

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Issue Links

• links to: GitHub Pull Request #1635