[CASSANDRA-16191] Add tests for Repair metrics

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0-rc1, 4.0
• Component/s: Test/dtest/python
• Epic Link: 40_Quality_Test
• Change Category: Quality Assurance
• Complexity: Low Hanging Fruit

Source Control Link

https://github.com/apache/cassandra-dtest/commit/93f5933a0d4229f3592c0e3fe80f677561bce63a

Test and Documentation Plan

In existing preview_repair_test.py , which 3 nodes are started.
After adding few records in node-3, its stopped, similarly few records
are added in node-1 & its stopped.

Later before performing sync operation, nodetool preview and validate operations
are performed. So this preview operation will tick the RepairMetrics::previewFailures metric,
so its expected that RepairMetrics::previewFailures metric count is increased.

After performing sync operations in cluster, when same preview operation is performed,
then RepairMetrics::previewFailures metric value should remain same.

• Assignee: Yasar Arafath Baigh
• Reporter: Benjamin Lerer

Authors

Yasar Arafath Baigh

Reviewers

Adam Holmberg, Andres de la Peña, Benjamin Lerer

• Created: 06/Oct/20 12:15
• Updated: 08/Mar/21 12:58
• Resolved: 08/Mar/21 12:58

Description

We do not seems to have some tests for the RepairMetrics.previewFailures counter.

Issue Links

• is a child of: CASSANDRA-15582 4.0 quality testing: metrics
• links to: circle-ci build trunk
• links to: Git-PR : https://github.com/yasar-baigh-kloud-one/cassandra-dtest/pull/1