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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2016/03/04 11:59:40 UTC

[jira] [Updated] (SPARK-12925) Improve HiveInspectors.unwrap for StringObjectInspector.getPrimitiveWritableObject

     [ https://issues.apache.org/jira/browse/SPARK-12925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen updated SPARK-12925:
------------------------------
    Priority: Minor  (was: Major)

> 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
>            Priority: Minor
>             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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