[jira] [Updated] (SPARK-3047) add an option to use str in textFileRDD()

["Davies Liu (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-3047?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Davies Liu updated SPARK-3047:
------------------------------

    Summary: add an option to use str in textFileRDD()  (was: Use utf-8 for textFile() by default)

> add an option to use str in textFileRDD()
> -----------------------------------------
>
>                 Key: SPARK-3047
>                 URL: https://issues.apache.org/jira/browse/SPARK-3047
>             Project: Spark
>          Issue Type: Improvement
>            Reporter: Davies Liu
>
> In Python 2.x, most of the string are bytearray, it's more efficient then unicode (both cpu and memory).
> UTF-8 is the default encoding.
> After disable decode from utf8 into unicode in UTF8Deserializer, the total time for wc job is reduce by 32% (from 2m17s to 1m34s).
> We also could add argument unicode=False to textFile().



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