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1.  final def !=(arg0: Any): Boolean

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2.  final def ##(): Int

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3.  final def ==(arg0: Any): Boolean

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4.  final def asInstanceOf[T0]: T0

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5.  def clone(): AnyRef

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6.  final def eq(arg0: AnyRef): Boolean

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7.  def equals(arg0: Any): Boolean

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8.  def finalize(): Unit

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9.  final def getClass(): Class[_]

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10.  def getOffsetAndSize(row: UnsafeRow, index: Int): (Int, Int)
11.  def hashCode(): Int

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12.  final def isInstanceOf[T0]: Boolean

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13.  final def ne(arg0: AnyRef): Boolean

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14.  final def notify(): Unit

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15.  final def notifyAll(): Unit

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16.  final def synchronized[T0](arg0: ⇒ T0): T0

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17.  def toString(): String

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18.  def validateStructuralIntegrity(row: UnsafeRow, expectedSchema: StructType): Boolean

    Use the following rules to check the integrity of the UnsafeRow: - schema.fields.length == row.numFields should always be true - UnsafeRow.calculateBitSetWidthInBytes(row.numFields) < row.getSizeInBytes should always be true if the expectedSchema contains at least one field.

    Use the following rules to check the integrity of the UnsafeRow: - schema.fields.length == row.numFields should always be true - UnsafeRow.calculateBitSetWidthInBytes(row.numFields) < row.getSizeInBytes should always be true if the expectedSchema contains at least one field. - For variable-length fields:

    • if null bit says it's null, then
      • in general the offset-and-size should be zero
      • special case: variable-length DecimalType is considered mutable in UnsafeRow, and to support that, the offset is set to point to the variable-length part like a non-null value, while the size is set to zero to signal that it's a null value. The offset may also be set to zero, in which case this variable-length Decimal no longer supports being mutable in the UnsafeRow.
    • otherwise the field is not null, then extract offset and size: 1) 0 <= size < row.getSizeInBytes should always be true. We can be even more precise than this, where the upper bound of size can only be as big as the variable length part of the row. 2) offset should be >= fixed sized part of the row. 3) offset + size should be within the row bounds. - For fixed-length fields that are narrower than 8 bytes (boolean/byte/short/int/float), if null bit says it's null then don't do anything, else: check if the unused bits in the field are all zeros. The UnsafeRowWriter's write() methods make this guarantee. - Check the total length of the row.
19.  final def wait(): Unit

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20.  final def wait(arg0: Long, arg1: Int): Unit

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21.  final def wait(arg0: Long): Unit

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