[FLINK-27175][hive] Fix fail to call Hive UDAF when the UDAF accepts one parameter with array type

[luoyuxia]

What is the purpose of the change

To fix fail to call Hive UDAF when the UDAF accepts one parameter with array type

Brief change log

When the parameter is a single array, wrap it to an array.

Verifying this change

Added test method testUDAFCollectList in HiveGenericUDAFTest.java

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? N/A

[flinkbot]

CI report:

• e89c5b92b231c7e7f2e606387fc1d4a2ada32e35 Azure: FAILURE

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot run azure re-run the last Azure build

[luoyuxia]

@flinkbot run azure

[luoyuxia]

@hehuiyuan Thanks very much for your review.

[hehuiyuan]

@hehuiyuan Thanks very much for your review.

We are just doing some hive compatibility verification.

[lsyldliu]

@luoyuxia Thanks for your contribution, I left a minor comment. Overall, LGTM

[wuchong]

Could you add an IT case for this?

[luoyuxia]

Could you add an IT case for this?

Sure. Now, I add a query in udaf.q to verify this fix. Without this fix, the query will fail to run.