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Posted to issues@spark.apache.org by "Wenchen Fan (JIRA)" <ji...@apache.org> on 2019/01/15 05:06:00 UTC

[jira] [Resolved] (SPARK-25935) Prevent null rows from JSON parser

     [ https://issues.apache.org/jira/browse/SPARK-25935?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-25935.
---------------------------------
    Resolution: Won't Fix

> Prevent null rows from JSON parser
> ----------------------------------
>
>                 Key: SPARK-25935
>                 URL: https://issues.apache.org/jira/browse/SPARK-25935
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Maxim Gekk
>            Priority: Minor
>             Fix For: 3.0.0
>
>
> Currently, JSON parser can produce nulls if it cannot detect any valid JSON token on the root level, see https://github.com/apache/spark/blob/4d6704db4d490bd1830ed3c757525f41058523e0/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/json/JacksonParser.scala#L402 . As a consequence of that, the from_json() function can produce null in the PERMISSIVE mode. To prevent that, need to throw an exception which should treat as a bad record and handled according specified mode.



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