Customer reports are not reflecting today's updates.
Data Engineering Lead
Snowflake MERGE job failed due to duplicate CUSTOMER_ID records in staging.
Source Systems Team
Source system generated multiple updates for the same customer during batch processing.
Analytics Team
Customer dimension refresh is blocked until the MERGE issue is resolved.
MERGE Failure Timeline
Customer update ingestion failed during the Snowflake MERGE step because duplicate CUSTOMER_ID records existed in the staging layer, preventing successful upsert execution.
MERGE Failure Risk
Staging Data Load: 08:00 AM (SUCCESS) Duplicate Key Check: 08:10 AM (FAILED) MERGE Operation: 08:15 AM (ABORTED) Impact: Customer dimension not updated
🔴 HIGH PRIORITY INCIDENT
Failed Upserts / MERGE Incident
Investigate and resolve a production issue where Snowflake MERGE operations failed due to duplicate business keys in staging data, preventing customer records from being updated.
Pipeline
daily_customer_merge
Severity
HIGH
Customer update pipeline encountered a Snowflake MERGE failure after multiple records for the same CUSTOMER_ID were detected in the staging layer.
🔔 Alert Received
PagerDuty alerted the team that the Snowflake MERGE operation failed during the daily customer update pipeline.
Alert:
MERGE Operation Failed
Pipeline:
daily_customer_updates
Issue:
Duplicate row detected during DML action
Severity:
HIGH
Root Cause Analysis
MERGE Failure Evidence
Component: Staging Customer Table
Duplicate CUSTOMER_ID Records Found
DETECTED
Component: Snowflake MERGE
Multiple Source Rows Matched Same Key
FAILED
Component: CUSTOMER_MASTER
Customer Updates Not Applied
CRITICAL
MERGE Health Metrics
Staging Records
1.1M
Duplicate CUSTOMER_IDs
2,350
MERGE Status
FAILED
Affected Customers
850K
Severity
HIGH
Production Engineering Workspace
Incident Decision Engine
Choose the safest production action to resolve the MERGE failure and restore customer data processing.