[jira] [Updated] (SPARK-3421) StructField.toString should quote the name field to allow arbitrary character as struct field name

["Michael Armbrust (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-3421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Armbrust updated SPARK-3421:
------------------------------------
    Target Version/s: 1.2.0  (was: 1.1.0)

> StructField.toString should quote the name field to allow arbitrary character as struct field name
> --------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-3421
>                 URL: https://issues.apache.org/jira/browse/SPARK-3421
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.0.2
>            Reporter: Cheng Lian
>            Assignee: Cheng Lian
>
> The original use case is something like this:
> {code}
> // JSON snippet with "illegal" characters in field names
> val json =
>   """{ "a(b)": { "c(d)": "hello" } }""" ::
>   """{ "a(b)": { "c(d)": "world" } }""" ::
>   Nil
> val jsonSchemaRdd = sqlContext.jsonRDD(sparkContext.makeRDD(json))
> jsonSchemaRdd.saveAsParquetFile("/tmp/file.parquet")
> java.lang.Exception: java.lang.RuntimeException: Unsupported dataType: StructType(ArrayBuffer(StructField(a(b),StructType(ArrayBuffer(StructField(c(d),StringType,true))),true))), [1.37] failure: `,' expected but `(' found
> {code}
> The reason is that, the {{DataType}} parser only allows {{\[a-zA-Z0-9_\]*}} as struct field name.



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