raminqaf opened a new pull request, #29805:
URL: https://github.com/apache/flink/pull/29805
## What is the purpose of the change
Backport of #29628 to release-2.4. `JSON_LENGTH` (FLINK-40089) and
`JSON_TYPE` (FLINK-40268) are new in 2.4. Without this commit, 2.4.0 ships them
with path functions that fail the job instead of returning NULL:
| `f0` | Query | release-2.4 today
| With this
commit |
|--------------|-------------------------------|---------------------------------------------------------------------------------------------|------------------|
| `[]` | `JSON_LENGTH(f0, '$.min()')` | `JsonPathException:
Aggregation function attempted to calculate value using empty array` | NULL
|
| `{"a": []}` | `JSON_TYPE(f0, '$.a.avg()')` | the same exception
| NULL
|
## Brief change log
- Cherry-pick of 44131db0b9c, applied without conflicts
## Verifying this change
`JsonFunctionsITCase` passes on this branch.
## 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. The `JSON_LENGTH`
and `JSON_TYPE` docs list the new NULL case, see the release note on
FLINK-41086.
---
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Generated-by: Claude Code 2.1.319 (Claude Opus 5.5)
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