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https://issues.apache.org/jira/browse/ARROW-7965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17072496#comment-17072496
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Joris Van den Bossche commented on ARROW-7965:
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This depends on ARROW-8164, but if that gets merged quickly, it would be nice
tackle this issue for 0.17 since that would enable us to remove `factory()`
from the high-level user API (which wasn't there yet in 0.16, so this would
avoid it ever being in a released version)
> [Python] Hold a reference to the dataset factory for later reuse
> ----------------------------------------------------------------
>
> Key: ARROW-7965
> URL: https://issues.apache.org/jira/browse/ARROW-7965
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Reporter: Krisztian Szucs
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.17.0
>
> Time Spent: 2.5h
> Remaining Estimate: 0h
>
> Provide a more intuitive way to construct nested dataset:
> ```python
> # instead of using confusing factory function
> dataset([
> factory("s3://old-taxi-data", format="parquet"),
> factory("local/path/to/new/data", format="csv")
> ])
> # let the user to construct a new dataset directly from dataset objects
> dataset([
> dataset("s3://old-taxi-data", format="parquet"),
> dataset("local/path/to/new/data", format="csv")
> ])
> ```
> In the future we might want to introduce a new Dataset class which wraps
> functionality of both the dataset actory and the materialized dataset
> enabling optimizations over rediscovery of already materialized datasets.
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