yahoNanJing opened a new issue, #129:
URL: https://github.com/apache/arrow-ballista/issues/129
**Is your feature request related to a problem or challenge? Please describe
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To be an efficient distributed execution platform, there're still many
aspects we need to improve.
**Describe the solution you'd like**
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- For scheduler, efficient task scheduling
- [ ] refine the scheduler state cache layer
- [ ] use multiple threads for generating execution plan from logical plan
- [ ] use round-robin policy for executor resource assignment
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