weiyong-dba

### Greenplum version or build I install gpdb from 6.2.1 rpm. ``` postgres=# select version(); version ------------------------------ PostgreSQL 9.4.24 (Greenplum Database 6.2.1 build commit:d90ac1a1b983b913b3950430d4d9e47ee8827fd4) on x86_64-unknown-linux-gnu, compiled by gcc (GCC)...