Kazuaki Ishizaki created SPARK-16412:
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Summary: Generate Java code that gets an array in each column of
CachedBatch when DataFrame.cache() is called
Key: SPARK-16412
URL: https://issues.apache.org/jira/browse/SPARK-16412
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: Kazuaki Ishizaki
Once SPARK-14098 is merged, we will migrate a feature in this JIRA entry.
When DataFrame.cache() is called, data is stored as column-oriented storage in
CachedBatch. The current Catalyst generates Java program to get an array in a
column from an InternalRow that is copied from CachedBatch. This JIRA entry
generates Java code to directly get the array in a column from CachedBatch
without copy. This JIRA entry supports an array (ArrayType in Spark).
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