Yuchen Fan created IMPALA-11887:
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Summary: Support auto adjust mt_dop when CPU utilization is high
Key: IMPALA-11887
URL: https://issues.apache.org/jira/browse/IMPALA-11887
Project: IMPALA
Issue Type: New Feature
Components: Backend
Affects Versions: Impala 4.1.0
Reporter: Yuchen Fan
Currently, when the CPU resources are relatively idle, enabling MT_DOP can
significantly improve the query execution performance, but it will also
increase the CPU usage. In the case of a sudden increase in query amount, the
CPU resources of the executor may be exhausted. Therefore, a mechanism is
needed to dynamically adjust the value of MT_DOP according to the CPU usage.
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