[GitHub] spark pull request #13680: [SPARK-15962][SQL] Introduce implementation with ...

[cloud-fan <gi...@git.apache.org>]

Github user cloud-fan commented on a diff in the pull request:

    https://github.com/apache/spark/pull/13680#discussion_r68538744
  
    --- Diff: sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/UnsafeArrayData.java ---
    @@ -25,17 +25,21 @@
     import org.apache.spark.sql.types.*;
     import org.apache.spark.unsafe.Platform;
     import org.apache.spark.unsafe.array.ByteArrayMethods;
    +import org.apache.spark.unsafe.bitset.BitSetMethods;
     import org.apache.spark.unsafe.hash.Murmur3_x86_32;
     import org.apache.spark.unsafe.types.CalendarInterval;
     import org.apache.spark.unsafe.types.UTF8String;
     
     /**
      * An Unsafe implementation of Array which is backed by raw memory instead of Java objects.
      *
    - * Each tuple has three parts: [numElements] [offsets] [values]
    + * Each tuple has three four: [numElements] [null bits] [values] [variable length portion]
    --- End diff --
    
    [values] -> [values or offset]?


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