[jira] [Updated] (ARROW-6469) [Python] HDFS doc5mentation does not mention HDFS short circuit readings

["Antoine Pitrou (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-6469?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou updated ARROW-6469:
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    Summary: [Python] HDFS documentation does not mention HDFS short circuit readings  (was: PyArrow HDFS documentation does not mention HDFS short circuit readings)

> [Python] HDFS documentation does not mention HDFS short circuit readings
> ------------------------------------------------------------------------
>
>                 Key: ARROW-6469
>                 URL: https://issues.apache.org/jira/browse/ARROW-6469
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>            Reporter: Paulo Roberto Cerioni
>            Priority: Minor
>              Labels: documentation
>
> Due to PyArrow using libhdfs underneath, it is expected that files read from HDFS are going to make use of short circuit readings.
> However, the PyArrow documentation does not explain whether this feature is supported (and on what situations) and if that works without any configuration.
> For instance, I'm interested in the use case in which we make use of short circuit feature to read some of the columns from a Parquet file located in HDFS into a dataframe.
>  



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