Davies Liu created SPARK-11493:
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             Summary: Remove Bitset in BytesToBytesMap
                 Key: SPARK-11493
                 URL: https://issues.apache.org/jira/browse/SPARK-11493
             Project: Spark
          Issue Type: Task
          Components: SQL
    Affects Versions: 1.6.0
            Reporter: Davies Liu
            Assignee: Davies Liu


Since we have 4 bytes as number of records in the beginning of a page, then the 
address can not be zero, so we do not need the bitset.



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