[FLINK-29664][runtime] Collect subpartition sizes of blocking result partitions

[wanglijie95]

What is the purpose of the change

Collect subpartition sizes of blocking result partitions

Verifying this change

Some unit tests.

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)

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CI report:

• 3292157 Azure: SUCCESS

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[wanglijie95]

Thanks for review @zhuzhurk. I 've addressed or replied all comments. Please take a look.

[wanglijie95]

I measured the space usage of AllToAllBlockingResultInfo on a real cluster. For an A -> B test job, where A -> B is an all-to-all edge, we test the space occupancy of 1024*1024(1024 partitions and each partition has 1024 subpartitons) and 8192*8192:
1024*1024 : 8.07 MB
8192*8192 : 513 MB

[zhuzhurk]

Thanks for addressing all the comments.
LGTM.