[FLINK-37788] Use Java 17 instanceof pattern matching in equals() method in Flink Core…

[pranav234]

… types

What is the purpose of the change

Refractor equals() method in different classes to use Java 17 pattern matching capabilities of Java 17 instance of operator

Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

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: (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, 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? no
• If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented) not applicable

[flinkbot]

CI report:

• af8fa9e Azure: FAILURE

Bot commands

The @flinkbot bot supports the following commands:

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

[pranav234]

@flinkbot run azure

[pranav234]

ping @rmetzger @davidradl

[snuyanzin]

I wonder how it will work with jdk11 which is still used for nightly

flink/tools/azure-pipelines/build-apache-repo.yml

Lines 103 to 110 in 4a77e9d

	- template: build-nightly-dist.yml
	parameters:
	stage_name: cron_snapshot_deployment
	environment: PROFILE="-Djdk11 -Pjava11-target"
	container: flink-build-container
	# In order for other repository's(e.g. flink-docker, flink-benchmarks) CI to cover all supported jdks, keep it to the minimum supported version.
	# Upgrade this only when we drop support for this jdk version.
	jdk: 11

[davidradl]

the CI FAILURE looks like a a checkstyle issue.