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https://issues.apache.org/jira/browse/SPARK-12925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15176729#comment-15176729
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Apache Spark commented on SPARK-12925:
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User 'rajeshbalamohan' has created a pull request for this issue:
https://github.com/apache/spark/pull/11477
> Improve HiveInspectors.unwrap for
> StringObjectInspector.getPrimitiveWritableObject
> ----------------------------------------------------------------------------------
>
> Key: SPARK-12925
> URL: https://issues.apache.org/jira/browse/SPARK-12925
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Fix For: 2.0.0
>
> Attachments: SPARK-12925_profiler_cpu_samples.png
>
>
> Text is in UTF-8 and converting it via "UTF8String.fromString" incurs
> decoding and encoding, which turns out to be expensive. (to be specific:
> https://github.com/apache/spark/blob/0d543b98f3e3da5053f0476f4647a765460861f3/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveInspectors.scala#L323)
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