[HUDI-7934] Fix RocksDBDAO prefixDelete to delete last entry properly

[wombatu-kun]

Change Logs

Done this https://github.com/apache/hudi/issues/11075
+
Fix UT:
Accordinly to commented code, all items must be deleted:

// Delete the last entry
getRocksDB().delete(getUTF8Bytes(lastEntry));

I fixed deletion of last entry and fix assertion in UT.

Impact

RocksDBDAO prefixDelete deletes all items

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

none

Documentation Update

none

• 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

[hudi-bot]

CI report:

• c69971789a3d498b8f2480bcd8bc08d833ed7e06 Azure: SUCCESS

Bot commands

@hudi-bot supports the following commands:

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

[wombatu-kun]

Somebody, please, merge it or close it.