chengshiwen opened a new issue #5175:
URL: https://github.com/apache/incubator-dolphinscheduler/issues/5175
**Describe the question**
`HostManager.select()` will call `workerGroupMapper.queryAllWorkerGroup()`
or `workerGroupMapper.queryWorkerGroupByName(workerGroupName)` from database,
and call `registryCenter.getRegisterOperator().get(workerGroupPath + "/" +
node)` from zookeeper.
They will cause more queries, even if these queries rarely change.
**What are the current deficiencies and the benefits of improvement**
- Optimize and reduce worker group queries of database and zookeeper
**Which version of DolphinScheduler:**
-[1.3.5]
-[dev]
**Describe alternatives you've considered**
A clear and concise description of any alternative improvement solutions
you've considered.
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