suddendust commented on code in PR #14348:
URL: https://github.com/apache/pinot/pull/14348#discussion_r1861768993


##########
docker/images/pinot/etc/jmx_prometheus_javaagent/configs/broker.yml:
##########
@@ -1,206 +1,13 @@
 rules:
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.authorization\"><>(\\w+)"
-  name: "pinot_broker_authorization_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.documentsScanned\"><>(\\w+)"
-  name: "pinot_broker_documentsScanned_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.entriesScannedInFilter\"><>(\\w+)"
-  name: "pinot_broker_entriesScannedInFilter_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.entriesScannedPostFilter\"><>(\\w+)"
-  name: "pinot_broker_entriesScannedPostFilter_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.freshnessLagMs\"><>(\\w+)"
-  name: "pinot_broker_freshnessLagMs_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.queries\"><>(\\w+)"
-  name: "pinot_broker_queries_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.queryExecution\"><>(\\w+)"
-  name: "pinot_broker_queryExecution_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.queryRouting\"><>(\\w+)"
-  name: "pinot_broker_queryRouting_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.reduce\"><>(\\w+)"
-  name: "pinot_broker_reduce_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
-- pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.(([^.]+)\\.)?([^.]*)\\.requestCompilation\"><>(\\w+)"
-  name: "pinot_broker_requestCompilation_$4"
-  cache: true
-  labels:
-    database: "$2"
-    table: "$1$3"
 - pattern: 
"\"org\\.apache\\.pinot\\.common\\.metrics\"<type=\"BrokerMetrics\", 
name=\"pinot\\.broker\\.requestSize\\.(([^.]+)\\.)?([^.]*)\"><>(\\w+)"

Review Comment:
   The mbean for `requestSize` is created as:
   
   `pinot.broker.requestSize.myTable`
   
   For others, like `freshnessLag`, it is created as:
   
   `pinot.broker.myTable.freshnessLagMs`
   
   That's why the pattern is different.
   
   >Do we every match this rule?
   
   I assume you're asking if we ever match this rule. Yes, we do. If we remove 
this pattern, `requestSize` metric breaks.



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