### Before Asking - [x] I have asked the [Data-Juicer Q&A Copilot](https://datajuicer.github.io/data-juicer/en/main/docs_index.html) (available on Doc Site, DingTalk, or Discord), but the problem still persists. - [x] I have read the [README](https://github.com/datajuicer/data-juicer/blob/main/README.md) carefully. - [x] I have pulled the latest code of main branch to run again and the problem still existed. ### Search before asking - [x] I have searched the Data-Juicer [issues](https://github.com/datajuicer/data-juicer/issues) and found no similar questions. ### Question groupby算子仅支持default模式，不支持ray模式，是因为ray模式下大规模数据时可能会数据倾斜导致OOM吗？还是说和数据规模无关，ray模式下就是不能groupby？ ### Environment Information _No response_ ### Additional Context _No response_
Before Asking
I have asked the Data-Juicer Q&A Copilot (available on Doc Site, DingTalk, or Discord), but the problem still persists.
I have read the README carefully.
I have pulled the latest code of main branch to run again and the problem still existed.
Search before asking
Question
groupby算子仅支持default模式，不支持ray模式，是因为ray模式下大规模数据时可能会数据倾斜导致OOM吗？还是说和数据规模无关，ray模式下就是不能groupby？
Environment Information
No response
Additional Context
No response