Hossein Falaki created SPARK-17916:
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Summary: CSV data source treats empty string as null no matter
what nullValue option is
Key: SPARK-17916
URL: https://issues.apache.org/jira/browse/SPARK-17916
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.0.1
Reporter: Hossein Falaki
When user configures {{nullValue}} in CSV data source, in addition to those
values, all empty string values are also converted to null.
{code}
data:
col1,col2
1,"-"
2,""
{code}
{code}
spark.read.format("csv").option("nullValue", "-")
{code}
We will find a null in both rows.
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