TDengine Too many core files causing the disk to be written full in version 3.0.1.6

Bug Description 升级V3.0.1.6之后，/根目录下每天会产生大量的core.XXX文件，导致磁盘被写满taosd进程崩溃。

To Reproduce

安装V3.0.1.5，创建数据库和超级表（默认参数），使用taosadapter写入/读取物联网数据；
停止、卸载V3.0.1.5，安装V3.0.1.6，保留历史数据，启动；
根目录每天产生大量core.xxxx文件，直至磁盘写满，进程崩溃

Expected Behavior 不要产生太多core文件，如果是代码报错，能够修复代码。

Screenshots gdb info：

[root@node-data /]# sudo gdb taosd core.30068 GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-120.el7 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/... Reading symbols from /usr/local/taos/bin/taosd...done. [New LWP 30119] [New LWP 30116] ... [New LWP 30083] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `/usr/bin/taosd'. Program terminated with signal 11, Segmentation fault. #0 0x00000000006d828f in tsdbRetrieveCacheRows (pReader=0x7ff6b50224e0, pResBlock=0x7ff734f6c6f0, slotIds=0x7

Environment (please complete the following information):