[MINOR] Improve mdt validator and upsert partitioner logs

[codope]

Change Logs

Added basepath to task labels and logging wherever necessary for easier debugging. Also, logging some stats for upsert partitioner.

Impact

none

Risk level (write none, low medium or high below)

none

Documentation Update

Describe any necessary documentation update if there is any new feature, config, or user-facing change

• The config description must be updated if new configs are added or the default value of the configs are changed
• Any new feature or user-facing change requires updating the Hudi website. Please create a Jira ticket, attach the ticket number here and follow the instruction to make changes to the website.

Contributor's checklist

• [ ] Read through contributor's guide
• [ ] Change Logs and Impact were stated clearly
• [ ] Adequate tests were added if applicable
• [ ] CI passed

[yihua]

@codope could you check the Azure CI?

[hudi-bot]

CI report:

• ffd5353d2752528cabc1a0e8ba5f59c5b857f04b Azure: SUCCESS

Bot commands

@hudi-bot supports the following commands:

• @hudi-bot run azure re-run the last Azure build