miklosgergely opened a new pull request #15629:
URL: https://github.com/apache/flink/pull/15629
## What is the purpose of the change
Due to a bug if HiveInputFormatPartitionReader has read all data from an
input split, and switches to a next one in hasNext(), no data will be read from
that new one, thus it will return an empty row. The problem is that the
reachedEnd() function call "loads" the next row, which is not invoked in case
of split switching, thus the row will be empty.
## Brief change log
Fix the split change logic to make sure that reachedEnd() is invoked for the
new split.
## Verifying this change
No test has covered this part so far, but there should be one. I've tested
it, works fine.
## 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/Mesos, 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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