[Mirror] [FLINK-19238] Sanity check for RocksDB arena block size

[carp84]

This is a mirror of #13688 which addresses the final review comments and squashes all necessary commits. Submitting a PR simply to trigger the pre-commit build and make sure nothing broken.

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Last check on commit 39cc0db (Sat Nov 07 15:21:22 UTC 2020)

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

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CI report:

• 39cc0db Azure: FAILURE Azure: FAILURE

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[carp84]

@flinkbot run azure

[carp84]

The pre-commit build with 39cc0db was failed due to FLINK-19882, rerun to get a green build.

[carp84]

The latest Azure build failed due to FLINK-20052, and comparing the two builds we could make sure the failure is irrelative to changes here, thus I will merge the commits soon.

@rmetzger @dianfu JFYI (for 1.12.0 release).

[carp84]

Merged via 93c6256