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https://issues.apache.org/jira/browse/SPARK-18909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15837438#comment-15837438
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Apache Spark commented on SPARK-18909:
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User 'dongjoon-hyun' has created a pull request for this issue:
https://github.com/apache/spark/pull/16701
> The error message in `ExpressionEncoder.toRow` and `fromRow` is too verbose
> ---------------------------------------------------------------------------
>
> Key: SPARK-18909
> URL: https://issues.apache.org/jira/browse/SPARK-18909
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Wenchen Fan
> Priority: Minor
>
> In `ExpressionEncoder.toRow` and `fromRow`, we will catch the exception and
> put the treeString of serializer/deserializer expressions in the error
> message. However, encoder can be very complex and the serializer/deserializer
> expressions can be very large trees and blow up the log files(e.g. generate
> over 500mb logs for this single error message.)
> We should simplify it.
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