godfreyhe opened a new pull request, #22376:
URL: https://github.com/apache/flink/pull/22376
## What is the purpose of the change
* For partitioned table, the "analyze table" command will generate a
separate SQL statement for each partition. When there are too many partitions,
the compilation/submission/execution time will be very long. This pr aims to
improve it:
* we can combine the sql statements for each partition into one with "union
all", and just need to execution one sql.
## Brief change log
- *Improve the implementation for AnalyzeTableUtil*
## Verifying this change
This change is already covered by existing tests, such as
*AnalyzeTableITCase*.
## 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, Kubernetes/Yarn, 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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