Re: First draft of PG 19 release notes

[彭冲]

Hi, Bruce



```



                    <para&gt; Previously <acronym&gt;JIT</acronym&gt; was 
enabled by default, and activated based on optimizer costs, but this costing 
has been determined to be unreliable. &nbsp;This this change requires sites 
that are doing many large analytical queries to manually enable 
<acronym&gt;JIT</acronym&gt;. </para&gt;```
This this, double "this".




Best regards,--
Chong Peng
Yunhe Enmo（Beijing）Technology Co.,LTD
http://www.enmotech.com/