changed by to By to match semconv

Author: magda-woj

jmx-metrics/src/main/resources/target-systems/hadoop.groovy

@@ -15,10 +15,10 @@
  */
 
 def beanHadoopNameNodeFS = otel.mbean("Hadoop:service=NameNode,name=FSNamesystem")
-otel.instrument(beanHadoopNameNodeFS, "hadoop.name_node.capacity.usage", "The current used capacity across all data nodes reporting to the name node.", "by",
+otel.instrument(beanHadoopNameNodeFS, "hadoop.name_node.capacity.usage", "The current used capacity across all data nodes reporting to the name node.", "By",
   ["node_name" : { mbean -> mbean.getProperty("tag.Hostname") }],
   "CapacityUsed", otel.&longUpDownCounterCallback)
-otel.instrument(beanHadoopNameNodeFS, "hadoop.name_node.capacity.limit", "The total capacity allotted to data nodes reporting to the name node.", "by",
+otel.instrument(beanHadoopNameNodeFS, "hadoop.name_node.capacity.limit", "The total capacity allotted to data nodes reporting to the name node.", "By",
   ["node_name" : { mbean -> mbean.getProperty("tag.Hostname") }],
   "CapacityTotal", otel.&longUpDownCounterCallback)
 otel.instrument(beanHadoopNameNodeFS, "hadoop.name_node.block.count", "The total number of blocks on the name node.", "{block}",

jmx-scraper/src/main/resources/hadoop.yaml

@@ -8,12 +8,12 @@ rules:
       CapacityUsed:
         metric: capacity.usage
         type: updowncounter
-        unit: by
+        unit: By
         desc: The current used capacity across all data nodes reporting to the name node.
       CapacityTotal:
         metric: capacity.limit
         type: updowncounter
-        unit: by
+        unit: By
         desc: The total capacity allotted to data nodes reporting to the name node.
       BlocksTotal:
         metric: block.count