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https://issues.apache.org/jira/browse/SPARK-23696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16401479#comment-16401479
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Hyukjin Kwon commented on SPARK-23696:
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Why don't we just directly use {{DataType.fromJson}} if you need to catch the
exception?
> StructType.fromString swallows exceptions from DataType.fromJson
> ----------------------------------------------------------------
>
> Key: SPARK-23696
> URL: https://issues.apache.org/jira/browse/SPARK-23696
> Project: Spark
> Issue Type: Bug
> Components: ML
> Affects Versions: 2.2.1
> Reporter: Simeon H.K. Fitch
> Priority: Trivial
>
> `StructType.fromString` swallows exceptions from `DataType.fromJson`,
> assuming they are an indication that the `LegacyTypeStringParser.parse`
> should be called instead. When that fails (because it throws an excreption),
> an error message is generated that does not reflect the true problem at hand,
> effectively swallowing the exception from `DataType.fromJson`. This makes
> debugging Parquet schema issues more difficult.
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