Kazuaki Ishizaki created SPARK-12907:
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Summary: Use BitSet to represent null fields in ColumnVector
Key: SPARK-12907
URL: https://issues.apache.org/jira/browse/SPARK-12907
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.0.0
Reporter: Kazuaki Ishizaki
Priority: Minor
Use bit vectors (BitSet) to represent null fields information in ColumnVector
to reduce memory footprint.
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