youkaichao 26fb87433d Improve collector (#125)
* remove multibuf

* reward_metric

* make fileds with empty Batch rather than None after reset

* many fixes and refactor
Co-authored-by: Trinkle23897 <463003665@qq.com>
2020-07-13 17:33:01 +08:00
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2020-07-13 17:33:01 +08:00
2020-07-09 22:57:01 +08:00
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