Enable AO/AOCO insert to multiple files even enable_parallel is off #83
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Since commit 5acbf4e, when enable_parallel is off, we will insert
into only one AO segfile even gp_appendonly_insert_files is > 1.
It will make data skew after user set enable_parallel to off,
while there are a lot of data inserted later or there are
online-steaming ETL severs.
And that make our parallel plan has a bottleneck.
In general, we should try to make AO segfiles as much as GUC
gp_appendonly_insert_files and avoid data skew for users,
no matter users use parallel query or not.
And only keep gp_appendonly_insert_files default value to 4 is enough.
Remove enable_parallel when initing AO/AOCS insertDesc.
Authored-by: Zhang Mingli avamingli@gmail.com
closes: #39
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Contributor's Checklist
Here are some reminders before you submit the pull request:
make installcheck
make -C src/test installcheck-cbdb-parallel