use plpython3u write gp7 will lock

[wonb168]

trafficstars

Bug Report

I used plpython3u to using duckdb， duckdb read gp is quickly， but write back to gp:

sql=f"""
insert into gp.adm.kpi_summary_duck
select * from tmp_rst
;"""
duckdb.execute(sql)

this run in python3.9 about 2 min, but in plpython(the same py3.9), even 36min not finished,

select query,* from pg_stat_activity where state='active'

the copy sql is locked, why?

Greenplum version or build

7.1

OS version and uname -a

centos8