Major Description
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.
Attachments
Issue Links
- links to
