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https://issues.apache.org/jira/browse/FLINK-10159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16582719#comment-16582719
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ASF GitHub Bot commented on FLINK-10159:
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pnowojski opened a new pull request #6570: [FLINK-10159][tests] Fail
TestHarness.initializeState if harness has already been initialized
URL: https://github.com/apache/flink/pull/6570
This is a change in tests only. Previously it was technically possible to
call first `harness.open()` followed by `harness.initializeState(fooBar)`.
However this was incorrect, since `open()` was already calling
`initializeState(null)`, which was leading to quirks. This commit adds a
`checkState` which makes sure that `initializeState` is called only once.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (yes / **no**)
- The serializers: (yes / **no** / don't know)
- The runtime per-record code paths (performance sensitive): (yes / **no**
/ don't know)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know)
- The S3 file system connector: (yes / **no** / don't know)
## Documentation
- Does this pull request introduce a new feature? (yes / **no**)
- If yes, how is the feature documented? (not applicable / docs / JavaDocs
/ not documented)
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> TestHarness#initializeState(xyz) calls after TestHarness#open() are being
> silently ignored
> ------------------------------------------------------------------------------------------
>
> Key: FLINK-10159
> URL: https://issues.apache.org/jira/browse/FLINK-10159
> Project: Flink
> Issue Type: Bug
> Components: Tests
> Affects Versions: 1.6.0
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
> Priority: Critical
> Labels: pull-request-available
>
> This is an old issue. Incorrect order of initializeState and open result to
> initializeState being ignored. For example in this code:
> {code:java}
> testHarness = createTestHarness(topic);
> testHarness.setup();
> testHarness.open();
> testHarness.initializeState(snapshot1);
> {code}
> Which is miss-leading both for Flink developers and for users (since we
> recommend using test harness for unit tests).
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