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https://issues.apache.org/jira/browse/SPARK-26303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16716145#comment-16716145
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ASF GitHub Bot commented on SPARK-26303:
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dongjoon-hyun commented on a change in pull request #23253: [SPARK-26303][SQL]
Return partial results for bad JSON records
URL: https://github.com/apache/spark/pull/23253#discussion_r240469549
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/BadRecordException.scala
##########
@@ -20,6 +20,16 @@ package org.apache.spark.sql.catalyst.util
import org.apache.spark.sql.catalyst.InternalRow
import org.apache.spark.unsafe.types.UTF8String
+/**
+ * Exception thrown when the underlying parser returns a partial result of
parsing.
+ * @param partialResult the partial result of parsing a bad record.
+ * @param cause the actual exception about why the parser cannot return full
result.
+ */
+case class PartialResultException(
Review comment:
I got it~ Thanks.
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> Return partial results for bad JSON records
> -------------------------------------------
>
> Key: SPARK-26303
> URL: https://issues.apache.org/jira/browse/SPARK-26303
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Maxim Gekk
> Priority: Minor
>
> Currently, JSON datasource and JSON functions return row with all null for a
> malformed JSON string in the PERMISSIVE mode when specified schema has the
> struct type. All nulls are returned even some of fields were parsed and
> converted to desired types successfully. The ticket aims to solve the problem
> by returning already parsed fields. The corrupted column specified via JSON
> option `columnNameOfCorruptRecord` or SQL config should contain whole
> original JSON string.
> For example, if the input has one JSON string:
> {code:json}
> {"a":0.1,"b":{},"c":"def"}
> {code}
> and specified schema is:
> {code:sql}
> a DOUBLE, b ARRAY<INT>, c STRING, _corrupt_record STRIN
> {code}
> expected output of `from_json` in the PERMISSIVE mode:
> {code}
> +---+----+---+--------------------------+
> |a |b |c |_corrupt_record |
> +---+----+---+--------------------------+
> |0.1|null|def|{"a":0.1,"b":{},"c":"def"}|
> +---+----+---+--------------------------+
> {code}
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