CCM-13935: Athena Alarm Tuning (#198)

jamesthompson26-nhs · web-flow · commit af0384addbd9 · 2026-01-19T11:00:55.000Z
diff --git a/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_core.tf b/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_core.tf
@@ -22,7 +22,7 @@ resource "aws_cloudwatch_metric_alarm" "athena_workgroup_processed_bytes_core" {
 
   metric_query {
     id          = "ad1"
-    expression  = "ANOMALY_DETECTION_BAND(m1, 2)"
+    expression  = "ANOMALY_DETECTION_BAND(m1, 4)"
     label       = "Anomaly Detection Band"
     return_data = true
   }
diff --git a/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_housekeeping.tf b/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_housekeeping.tf
@@ -22,7 +22,7 @@ resource "aws_cloudwatch_metric_alarm" "athena_workgroup_processed_bytes_houseke
 
   metric_query {
     id          = "ad1"
-    expression  = "ANOMALY_DETECTION_BAND(m1, 2)"
+    expression  = "ANOMALY_DETECTION_BAND(m1, 4)"
     label       = "Anomaly Detection Band"
     return_data = true
   }
diff --git a/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_ingestion.tf b/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_ingestion.tf
@@ -22,7 +22,7 @@ resource "aws_cloudwatch_metric_alarm" "athena_workgroup_processed_bytes_ingesti
 
   metric_query {
     id          = "ad1"
-    expression  = "ANOMALY_DETECTION_BAND(m1, 2)"
+    expression  = "ANOMALY_DETECTION_BAND(m1, 4)"
     label       = "Anomaly Detection Band"
     return_data = true
   }
diff --git a/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_setup.tf b/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_setup.tf
@@ -22,7 +22,7 @@ resource "aws_cloudwatch_metric_alarm" "athena_workgroup_processed_bytes_setup"
 
   metric_query {
     id          = "ad1"
-    expression  = "ANOMALY_DETECTION_BAND(m1, 2)"
+    expression  = "ANOMALY_DETECTION_BAND(m1, 4)"
     label       = "Anomaly Detection Band"
     return_data = true
   }
diff --git a/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_user.tf b/infrastructure/terraform/components/reporting/cloudwatch_metric_alarm_athena_workgroup_processed_bytes_user.tf
@@ -22,7 +22,7 @@ resource "aws_cloudwatch_metric_alarm" "athena_workgroup_processed_bytes_user" {
 
   metric_query {
     id          = "ad1"
-    expression  = "ANOMALY_DETECTION_BAND(m1, 2)"
+    expression  = "ANOMALY_DETECTION_BAND(m1, 4)"
     label       = "Anomaly Detection Band"
     return_data = true
   }

Original file line number	Diff line number	Diff line change
`@@ -22,7 +22,7 @@ resource "aws_cloudwatch_metric_alarm" "athena_workgroup_processed_bytes_core" {`
`22`	`22`
`23`	`23`	`metric_query {`
`24`	`24`	`id = "ad1"`
`25`		`- expression = "ANOMALY_DETECTION_BAND(m1, 2)"`
	`25`	`+ expression = "ANOMALY_DETECTION_BAND(m1, 4)"`
`26`	`26`	`label = "Anomaly Detection Band"`
`27`	`27`	`return_data = true`
`28`	`28`	`}`