Efrat19 opened a new pull request, #29383:
URL: https://github.com/apache/flink/pull/29383
## What is the purpose of the change
With 2 tasks the test sometimes fail due to a different error message:
```
[ERROR]
org.apache.flink.test.checkpointing.CheckpointSyncPhaseTimeoutITCase.testStuckSyncPhaseFailsJob(MiniCluster)
-- Time elapsed: 3.902 s <<< FAILURE!
org.opentest4j.AssertionFailedError:
Expecting a root cause with message:
"Task Source: Custom Source (1/1)#0 did not complete the synchronous phase
of checkpoint 1 within 50 ms."
but message was:
"Task Sink: Writer (1/1)#0 did not complete the synchronous phase of
checkpoint 1 within 50 ms.".
```
https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=79739&view=logs&j=39d5b1d5-3b41-54dc-6458-1e2ddd1cdcf3
## Brief change log
Switching to a single vertex job to avoid the race
## Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
- If yes, how is the feature documented? not applicable
---
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