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Posted to issues@spark.apache.org by "Davies Liu (JIRA)" <ji...@apache.org> on 2014/08/14 21:50:18 UTC

[jira] [Created] (SPARK-3047) Use utf-8 for textFile() by default

Davies Liu created SPARK-3047:
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             Summary: Use utf-8 for textFile() by default
                 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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