[CASSANDRA-15569] StorageProxy updateCoordinatorWriteLatencyTableMetric can produce misleading metrics

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0-alpha4, 4.0
• Component/s: Consistency/Coordination, Legacy/Local Write-Read Paths, Observability/Metrics
• Labels: pull-request-available
• Bug Category: Correctness - API / Semantic Implementation
• Severity: Normal
• Complexity: Low Hanging Fruit
• Discovered By: Code Inspection
• Platform: All
• Since Version: 4.0-alpha

Source Control Link

https://github.com/apache/cassandra/commit/247502c5d19c181bbe0a224da3ad6ebd0156f607

Test and Documentation Plan

jvm dtests added which check JMX

• Assignee: David Capwell
• Reporter: David Capwell

Authors

David Capwell

Reviewers

Blake Eggleston

• Created: 12/Feb/20 19:54
• Updated: 21/Dec/20 08:07
• Resolved: 14/Feb/20 21:49

Description

If multiple mutations affect the same table, then metrics will get posted multiple times to the same table.

Circle CI

Issue Links

• links to: GitHub Pull Request #445