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https://issues.apache.org/jira/browse/SPARK-42130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17679053#comment-17679053
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Apache Spark commented on SPARK-42130:
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User 'gengliangwang' has created a pull request for this issue:
https://github.com/apache/spark/pull/39666
> Handle null string values in AccumulableInfo and ProcessSummary
> ---------------------------------------------------------------
>
> Key: SPARK-42130
> URL: https://issues.apache.org/jira/browse/SPARK-42130
> Project: Spark
> Issue Type: Sub-task
> Components: Web UI
> Affects Versions: 3.4.0
> Reporter: Gengliang Wang
> Assignee: Gengliang Wang
> Priority: Major
>
> Use optional string for string fields so that we can serialize/deserialize
> null string correctly
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