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https://issues.apache.org/jira/browse/SPARK-21017?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-21017.
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Resolution: Not A Problem
> Move the length getter before the while to improve performance
> --------------------------------------------------------------
>
> Key: SPARK-21017
> URL: https://issues.apache.org/jira/browse/SPARK-21017
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.1.1
> Reporter: eaton
> Priority: Minor
>
> In my test, the cost of the while in the write function of HiveOutputWriter
> class have improved from 48ms to 40ms for a table of 500 rows and 100 columns
> when putting the length getter before the while
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