Hi Starrocks team, wanted to ask a question about this system variable https://docs.starrocks.io/docs/sql-reference/System_variable/#pipeline_dop What exactly does this variable do? Running

set global pipeline_dop = 1;

as suggested by another user seemed to increase our query throughput quite significantly without causing additional errors but we're unsure of a couple things. 1. Is the recommended value being half the physical cores mean the number of cores across each fe node? Each cn node? The entire fe side of the cluster? The entire be side of the cluster? 2. We're running Starrocks 3.5. According to the documentation, this shouldn't be something we needed to touch due to adaptive adjustment, if so what effect did setting this variable actually have?

The suggested number refers to the cores of each be/cn nodes. If you set it to a number > 0, the concurrency of each be will be set to that constant number (not adaptive anymore)