V2.5.0-release

The main modifications of V2.5.0-release version focus on:

1. Performance optimization

   When using the extended protocol, multiple pieces of data in insert/function are rewritten as copy, and the writing performance is improved by dozens of times The accuracy of cost estimation is improved, and the execution plan performance is improved by more than 2 times pg_stat_cluster_activity memory usage optimization

2. Enhanced functions

   Join tables of different nodegroups that support resource isolation Support subscribing DN WAL logs from CN Support the synchronization of analyze information to other CNs to ensure that the statistical information of different CNs is consistent Increase libpq TCP timeout setting The error message prompt is strengthened, which is convenient for users to analyze problems

3. Other known bug fixes