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https://issues.apache.org/jira/browse/SPARK-15380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-15380:
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Assignee: Apache Spark
> Generate code that stores a float/double value in each column from
> ColumnarBatch when DataFrame.cache() is used
> ---------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-15380
> URL: https://issues.apache.org/jira/browse/SPARK-15380
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Kazuaki Ishizaki
> Assignee: Apache Spark
>
> When DataFrame.cache() is called, data will be stored as column-oriented
> storage in CachedBatch. The current Catalyst generates Java program to store
> a computed value to an InternalRow and then the value is stored into
> CachedBatch even if data is read from ColumnarBatch for ParquetReader.
> This JIRA generates Java code to store a value into a ColumnarBatch, and
> store data from the ColumnarBatch to the CachedBatch. This JIRA handles only
> float and double types for a value.
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