Kazuaki Ishizaki created SPARK-15117:
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Summary: Generate code that get a value in each compressed column
from CachedBatch when DataFrame.cache() is called
Key: SPARK-15117
URL: https://issues.apache.org/jira/browse/SPARK-15117
Project: Spark
Issue Type: Improvement
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 a value of a
column from an InternalRow that is translated from CachedBatch. This issue
generates Java code to get a value of a column from CachedBatch. This JIRA
entry supports other primitive types (boolean/byte/short/int/long) whose column
may be compressed.
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