[Failing Test] :runners:spark:3:test StreamingTransformTranslatorTest testFlattenPCollResumeFromCheckpoint is very flaky

[kennknowles]

What happened?

Example: https://develocity.apache.org/s/s7ggpygz2akg2/tests/overview?outcome=FAILED&toggled=WyI6cnVubmVyczpzcGFyazozOnRlc3QtNS1vcmcuYXBhY2hlLmJlYW0ucnVubmVycy5zcGFyay50cmFuc2xhdGlvbi5zdHJlYW1pbmcuc3RyZWFtaW5ndHJhbnNmb3JtdHJhbnNsYXRvcnRlc3QtMjgwIl0

Issue Failure

Failure: Test is flaky

Issue Priority

Priority: 1 (unhealthy code / failing or flaky postcommit so we cannot be sure the product is healthy)

Issue Components

• Component: Python SDK
• Component: Java SDK
• Component: Go SDK
• Component: Typescript SDK
• Component: IO connector
• Component: Beam YAML
• Component: Beam examples
• Component: Beam playground
• Component: Beam katas
• Component: Website
• Component: Infrastructure
• Component: Spark Runner
• Component: Flink Runner
• Component: Samza Runner
• Component: Twister2 Runner
• Component: Hazelcast Jet Runner
• Component: Google Cloud Dataflow Runner