[FLINK-21032][table] Not use ParallelFiniteTestSource in CompactionITCaseBase

[JingsongLi]

What is the purpose of the change

Fix tests unstable in CompactionITCaseBase.

Brief change log

ParallelFiniteTestSource leads to confusion of thread cooperation among multiple tasks, resulting in wrong results.
Use FiniteTestSource and rebalance instead of ParallelFiniteTestSource.

Verifying this change

CompactionITCaseBases

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (yes / no)no
• The public API, i.e., is any changed class annotated with @Public(Evolving): (yes / no)no
• The serializers: (yes / no / don't know)no
• The runtime per-record code paths (performance sensitive): (yes / no / don't know)no
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (yes / no / don't know)no
• The S3 file system connector: (yes / no / don't know)no

Documentation

• Does this pull request introduce a new feature? (yes / no)no

[flinkbot]

Thanks a lot for your contribution to the Apache Flink project. I'm the @flinkbot. I help the community
to review your pull request. We will use this comment to track the progress of the review.

Automated Checks

Last check on commit d5580c1 (Fri May 28 09:05:46 UTC 2021)

Warnings:

• No documentation files were touched! Remember to keep the Flink docs up to date!

_{Mention the bot in a comment to re-run the automated checks.}

Review Progress

• ❓ 1. The [description] looks good.
• ❓ 2. There is [consensus] that the contribution should go into to Flink.
• ❓ 3. Needs [attention] from.
• ❓ 4. The change fits into the overall [architecture].
• ❓ 5. Overall code [quality] is good.

Please see the Pull Request Review Guide for a full explanation of the review process.

The Bot is tracking the review progress through labels. Labels are applied according to the order of the review items. For consensus, approval by a Flink committer of PMC member is required

Bot commands

The @flinkbot bot supports the following commands:

• @flinkbot approve description to approve one or more aspects (aspects: description, consensus, architecture and quality)
• @flinkbot approve all to approve all aspects
• @flinkbot approve-until architecture to approve everything until architecture
• @flinkbot attention @username1 [@username2 ..] to require somebody's attention
• @flinkbot disapprove architecture to remove an approval you gave earlier

[flinkbot]

CI report:

• d5580c1 Azure: FAILURE

Bot commands

The @flinkbot bot supports the following commands:

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

[JingsongLi]

I've debugged and verified that rebalance works.

[leonardBang]

Thanks @JingsongLi for the fix, The change looks well.
But I found the test innerTestNonPartition(3) in CompactionITCaseBase can not cover parallel compaction operators because the compaction-operator is following after compaction-coordinator whose parallelism is constant 1, and the env parallelism is not works, so I suggest to add 'sink.parallelism' = '3' option for FileCompactionITCaseBase and HiveSinkCompactionITCase

[JingsongLi]

@leonardBang Nice catch! I have fixed source and compact operator.

[leonardBang]

Thanks @JingsongLi for the update, LGTM once the build passing