[jira] [Created] (SPARK-18658) Writing to a text DataSource buffers one or more lines in memory

["Nathan Howell (JIRA)" <ji...@apache.org>]

Nathan Howell created SPARK-18658:
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             Summary: Writing to a text DataSource buffers one or more lines in memory
                 Key: SPARK-18658
                 URL: https://issues.apache.org/jira/browse/SPARK-18658
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.0.2
            Reporter: Nathan Howell
            Priority: Minor


The JSON and CSV writing paths buffer entire lines (or multiple lines) in memory prior to writing to disk. For large rows this is inefficient. It may make sense to skip the {{TextOutputFormat}} record writer and go directly to the underlying {{FSDataOutputStream}}, allowing the writers to append arbitrary byte arrays (fractions of a row) instead of a full row.



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