[BUG][Spark][Uniform] Reorg Table for Uniform upgrades minReaderVersion to 3, documentation says it should be 2

[danielsahal]

Bug

Which Delta project/connector is this regarding?

• Spark
• Standalone
• Flink
• Kernel
• Other (fill in here)

Describe the problem

Delta documentation states that:

To enable UniForm, you must fulfill the following requirements:
The Delta table must have a minReaderVersion >= 2 and minWriterVersion >= 7.

However when running REORG TABLE table_name APPLY (UPGRADE UNIFORM(ICEBERG_COMPAT_VERSION=2) it upgrades the minReaderVersion to 3, as it is in source code HERE.

It looks like it's either a mistake in documentation or bug in a code.

Steps to reproduce

Observed results

Expected results

Further details

Environment information

• Delta Lake version:
• Spark version:
• Scala version:

Willingness to contribute

The Delta Lake Community encourages bug fix contributions. Would you or another member of your organization be willing to contribute a fix for this bug to the Delta Lake code base?

• Yes. I can contribute a fix for this bug independently.
• Yes. I would be willing to contribute a fix for this bug with guidance from the Delta Lake community.
• No. I cannot contribute a bug fix at this time.