Is this a BUG REPORT or FEATURE REQUEST?:

Uncomment only one, leave it on its own line:

• bug

What happened:
数据库突然异常，jdbc无法连接，查看后发现有core文件生成

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

1. 使用jdbc连接数据库
   连接失败
   corefile：
   Program terminated with signal 11, Segmentation fault.
   #0 0x00005629621d1693 in GUC_yylex(void*) ()
   #1 0x00005629621d20ec in ParseConfigFp...

多次执行发现，是 反复执行gs_guc reload -D xxx -c "timezone=xxx" 后coredump

Anything else we need to know?:

Environment:

• Version:
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Others: