Fix JDBC Log query order.

[weixiang1862]

Fix JDBC Log query order

• Add a unit test to verify that the fix works.
• Explain briefly why the bug exists and how to fix it.

• If this pull request closes/resolves/fixes an existing issue, replace the issue number. Closes #.
• Update the CHANGES log.

Logs query is order by timestamp, ASC means comparing(Log::getTimestamp) but not comparing(Log::getTimestamp).reversed();