[KED-1466] Sped up initialization of SparkHiveDataSet

[MigQ2]

Description

Implements changes described in #279

Checklist

• [ X] Read the contributing guidelines
• Opened this PR as a 'Draft Pull Request' if it is work-in-progress
• [ X] Updated the documentation to reflect the code changes
• [ X] Added a description of this change and added my name to the list of supporting contributions in the RELEASE.md file
• Added tests to cover my changes

Notice

• [ X] I acknowledge and agree that, by checking this box and clicking "Submit Pull Request":

• I submit this contribution under the Apache 2.0 license and represent that I am entitled to do so on behalf of myself, my employer, or relevant third parties, as applicable.

• I certify that (a) this contribution is my original creation and / or (b) to the extent it is not my original creation, I am authorised to submit this contribution on behalf of the original creator(s) or their licensees.

• I certify that the use of this contribution as authorised by the Apache 2.0 license does not violate the intellectual property rights of anyone else.

[deepyaman]

Super minor note... think it should be "Speed up..." to maintain common tense on the commit messages.

[andrii-ivaniuk]

A separate PR was created.

[mzjp2]

Hi @MigQ2, thanks for raising this PR! 🙌

We noticed that it branched off from a now pretty old version of the codebase and figured it'd be easier to take the changes you made and put it in the right place ourselves, with full credit to yourself in the contributor notes, of course! 🎉