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https://issues.apache.org/jira/browse/SPARK-10121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14707573#comment-14707573
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Apache Spark commented on SPARK-10121:
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User 'yhuai' has created a pull request for this issue:
https://github.com/apache/spark/pull/8368
> Custom Class added through Spark SQL's add jar command may not be in the
> class loader used by metadataHive
> ----------------------------------------------------------------------------------------------------------
>
> Key: SPARK-10121
> URL: https://issues.apache.org/jira/browse/SPARK-10121
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.4.0
> Reporter: Yin Huai
> Priority: Critical
>
> One symptom is that people connecting to Spark SQL through thrift server may
> see class not found exception when accessing their tables using custom serdes.
> I feel
> https://github.com/apache/spark/blob/master/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/commands.scala#L103
> is not enough. We probably should set the class loader explicitly to
> metadataHive like what we do at
> https://github.com/apache/spark/blob/master/sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/commands.scala#L101.
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