[Kernel] Change comparator expression to lazy evaluation

[zzl-7]

Which Delta project/connector is this regarding?

• [ ] Spark
• [ ] Standalone
• [ ] Flink
• [X] Kernel
• [ ] Other (fill in here)

Description

Resolves https://github.com/delta-io/delta/issues/2541

How was this patch tested?

Unit test in delta/kernel/kernel-defaults/src/test/scala/io/delta/kernel/defaults/internal/expressions/DefaultExpressionEvaluatorSuite.scala

Does this PR introduce any user-facing changes?

[zzl-7]

If code reviewer is ok with the approach, I can patch the PR with cleanup of old code and add more documentation Thank you

[zzl-7]

@vkorukanti thanks for code reviewing this PR, I have addressed everything, can you take a look at it again? Thank you

[zzl-7]

Hi @vkorukanti , is there any additional change that you would like me to do? If not can we merge the code? Thanks

[vkorukanti]

@zzl-7, sorry this is getting delayed. Will take a look at this week for sure.

[zzl-7]

@zzl-7, sorry this is getting delayed. Will take a look at this week for sure.

@vkorukanti , No worries, please let me know if there is anything I can do on my side to help :) Thanks

[zzl-7]

Hi @vkorukanti , just want to follow up on if there any additional change you would like me to do Thanks :)

[zzl-7]

@vkorukanti Thanks for the code review, I have fixed all suggestions, can you take a look at it again when you are free? Thank you

[zzl-7]

@zzl-7 Just one last comment. The VectorComparator is no longer used. Can you remove it? Let me know, I can also do it before merging it.

(forgot to comment while waiting for github action) good catch, just removed it , thanks :)