What this PR does / why we need it:
修复如下问题：
（1）通信DFX增强
（2）malloc内存不受控
（3）增量build问题
（4）pg_probackup日志优化

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

Release note: