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Compose with collections

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还没有人认领这个 Issue。

评估

难度
5/5
预计耗时
一周以上
新手友好度
20/100
Issue 类型
功能
描述清晰度
需要澄清
活跃度
停滞
技术栈
pandas, python
领域
data, stream-processing

调研方向

Start by reading the existing local and dask Stream implementations and the issue's proposed BatchStream example. Determine how collection-wise and dataframe streams should compose with both stream types, then document the API boundaries and completion criteria before implementing them.

由索引模型根据 Issue 内容生成。

描述

We probably want a Stream variant that moves around not individual elements, but batches or sequences of elements. We probably also want a Stream variant that moves around Pandas dataframes. Each of these would probably want a different API. Tor example map on a batched stream might look like the following:

class map(BatchStream):
    def __init__(self, func):
        ...
    def update(self, batch):
        new_batch = list(builtins.map(self.func, batch))
        self.emit(new_batch)

However each of these new collection-wise interfaces would probably want to compose with both the lower level local and dask Stream objects.

To that end maybe it makes sense to encapsulate a low-level stream within a user-level stream.

主要语言
Python
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派生
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平均合并
17 小时 39 分钟
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