Package org.apache.parquet.format

Class Statistics

java.lang.Object
org.apache.parquet.format.Statistics
All Implemented Interfaces:
Serializable, Cloneable, Comparable<Statistics>, org.apache.thrift.TBase<Statistics,Statistics._Fields>, org.apache.thrift.TSerializable
@Generated(value="Autogenerated by Thrift Compiler (0.23.0)", date="2026-08-06") public class Statistics extends Object implements org.apache.thrift.TBase<Statistics,Statistics._Fields>, Serializable, Cloneable, Comparable<Statistics>
Statistics per row group and per page All fields are optional.
See Also:

  • Field Details

    • max

      public ByteBuffer max
      DEPRECATED: min and max value of the column. Use min_value and max_value. Values are encoded using PLAIN encoding, except that variable-length byte arrays do not include a length prefix. These fields encode min and max values determined by signed comparison only. New files should use the correct order for a column's logical type and store the values in the min_value and max_value fields. To support older readers, these may be set when the column order is signed.

    • min

      public ByteBuffer min

    • null_count

      public long null_count
      Count of null values in the column. Writers SHOULD always write this field even if it is zero (i.e. no null value) or the column is not nullable. Readers MUST distinguish between null_count not being present and null_count == 0. If null_count is not present, readers MUST NOT assume null_count == 0.

    • distinct_count

      public long distinct_count
      count of distinct values occurring

    • max_value

      public ByteBuffer max_value
      Lower and upper bound values for the column, determined by its ColumnOrder. These may be the actual minimum and maximum values found on a page or column chunk, but can also be (more compact) values that do not exist on a page or column chunk. For example, instead of storing "Blart Versenwald III", a writer may set min_value="B", max_value="C". Such more compact values must still be valid values within the column's logical type. Values are encoded using PLAIN encoding, except that variable-length byte arrays do not include a length prefix.

    • min_value

      public ByteBuffer min_value

    • is_max_value_exact

      public boolean is_max_value_exact
      If true, max_value is the actual maximum value for a column

    • is_min_value_exact

      public boolean is_min_value_exact
      If true, min_value is the actual minimum value for a column

    • nan_count

      public long nan_count
      Count of NaN values in the column; only present if physical type is FLOAT or DOUBLE, or logical type is FLOAT16. If this field is not present, readers MUST assume NaNs may be present (i.e. MUST assume nan_count > 0 and MAY NOT assume nan_count == 0).

    • metaDataMap

      public static final Map<Statistics._Fields,org.apache.thrift.meta_data.FieldMetaData> metaDataMap

  • Constructor Details

    • Statistics

      public Statistics()

    • Statistics

      public Statistics(Statistics other)
      Performs a deep copy on other.

  • Method Details

    • deepCopy

      public Statistics deepCopy()
      Specified by:
      deepCopy in interface org.apache.thrift.TBase<Statistics,Statistics._Fields>

    • clear

      public void clear()
      Specified by:
      clear in interface org.apache.thrift.TBase<Statistics,Statistics._Fields>

    • getMax

      public byte[] getMax()
      DEPRECATED: min and max value of the column. Use min_value and max_value. Values are encoded using PLAIN encoding, except that variable-length byte arrays do not include a length prefix. These fields encode min and max values determined by signed comparison only. New files should use the correct order for a column's logical type and store the values in the min_value and max_value fields. To support older readers, these may be set when the column order is signed.

    • bufferForMax

      public ByteBuffer bufferForMax()

    • setMax

      public Statistics setMax(byte[] max)
      DEPRECATED: min and max value of the column. Use min_value and max_value. Values are encoded using PLAIN encoding, except that variable-length byte arrays do not include a length prefix. These fields encode min and max values determined by signed comparison only. New files should use the correct order for a column's logical type and store the values in the min_value and max_value fields. To support older readers, these may be set when the column order is signed.

    • setMax

      public Statistics setMax(ByteBuffer max)

    • unsetMax

      public void unsetMax()

    • isSetMax

      public boolean isSetMax()
      Returns true if field max is set (has been assigned a value) and false otherwise

    • setMaxIsSet

      public void setMaxIsSet(boolean value)

    • getMin

      public byte[] getMin()

    • bufferForMin

      public ByteBuffer bufferForMin()

    • setMin

      public Statistics setMin(byte[] min)

    • setMin

      public Statistics setMin(ByteBuffer min)

    • unsetMin

      public void unsetMin()

    • isSetMin

      public boolean isSetMin()
      Returns true if field min is set (has been assigned a value) and false otherwise

    • setMinIsSet

      public void setMinIsSet(boolean value)

    • getNull_count

      public long getNull_count()
      Count of null values in the column. Writers SHOULD always write this field even if it is zero (i.e. no null value) or the column is not nullable. Readers MUST distinguish between null_count not being present and null_count == 0. If null_count is not present, readers MUST NOT assume null_count == 0.

    • setNull_count

      public Statistics setNull_count(long null_count)
      Count of null values in the column. Writers SHOULD always write this field even if it is zero (i.e. no null value) or the column is not nullable. Readers MUST distinguish between null_count not being present and null_count == 0. If null_count is not present, readers MUST NOT assume null_count == 0.

    • unsetNull_count

      public void unsetNull_count()

    • isSetNull_count

      public boolean isSetNull_count()
      Returns true if field null_count is set (has been assigned a value) and false otherwise

    • setNull_countIsSet

      public void setNull_countIsSet(boolean value)

    • getDistinct_count

      public long getDistinct_count()
      count of distinct values occurring

    • setDistinct_count

      public Statistics setDistinct_count(long distinct_count)
      count of distinct values occurring

    • unsetDistinct_count

      public void unsetDistinct_count()

    • isSetDistinct_count

      public boolean isSetDistinct_count()
      Returns true if field distinct_count is set (has been assigned a value) and false otherwise

    • setDistinct_countIsSet

      public void setDistinct_countIsSet(boolean value)

    • getMax_value

      public byte[] getMax_value()
      Lower and upper bound values for the column, determined by its ColumnOrder. These may be the actual minimum and maximum values found on a page or column chunk, but can also be (more compact) values that do not exist on a page or column chunk. For example, instead of storing "Blart Versenwald III", a writer may set min_value="B", max_value="C". Such more compact values must still be valid values within the column's logical type. Values are encoded using PLAIN encoding, except that variable-length byte arrays do not include a length prefix.

    • bufferForMax_value

      public ByteBuffer bufferForMax_value()

    • setMax_value

      public Statistics setMax_value(byte[] max_value)
      Lower and upper bound values for the column, determined by its ColumnOrder. These may be the actual minimum and maximum values found on a page or column chunk, but can also be (more compact) values that do not exist on a page or column chunk. For example, instead of storing "Blart Versenwald III", a writer may set min_value="B", max_value="C". Such more compact values must still be valid values within the column's logical type. Values are encoded using PLAIN encoding, except that variable-length byte arrays do not include a length prefix.

    • setMax_value

      public Statistics setMax_value(ByteBuffer max_value)

    • unsetMax_value

      public void unsetMax_value()

    • isSetMax_value

      public boolean isSetMax_value()
      Returns true if field max_value is set (has been assigned a value) and false otherwise

    • setMax_valueIsSet

      public void setMax_valueIsSet(boolean value)

    • getMin_value

      public byte[] getMin_value()

    • bufferForMin_value

      public ByteBuffer bufferForMin_value()

    • setMin_value

      public Statistics setMin_value(byte[] min_value)

    • setMin_value

      public Statistics setMin_value(ByteBuffer min_value)

    • unsetMin_value

      public void unsetMin_value()

    • isSetMin_value

      public boolean isSetMin_value()
      Returns true if field min_value is set (has been assigned a value) and false otherwise

    • setMin_valueIsSet

      public void setMin_valueIsSet(boolean value)

    • isIs_max_value_exact

      public boolean isIs_max_value_exact()
      If true, max_value is the actual maximum value for a column

    • setIs_max_value_exact

      public Statistics setIs_max_value_exact(boolean is_max_value_exact)
      If true, max_value is the actual maximum value for a column

    • unsetIs_max_value_exact

      public void unsetIs_max_value_exact()

    • isSetIs_max_value_exact

      public boolean isSetIs_max_value_exact()
      Returns true if field is_max_value_exact is set (has been assigned a value) and false otherwise

    • setIs_max_value_exactIsSet

      public void setIs_max_value_exactIsSet(boolean value)

    • isIs_min_value_exact

      public boolean isIs_min_value_exact()
      If true, min_value is the actual minimum value for a column

    • setIs_min_value_exact

      public Statistics setIs_min_value_exact(boolean is_min_value_exact)
      If true, min_value is the actual minimum value for a column

    • unsetIs_min_value_exact

      public void unsetIs_min_value_exact()

    • isSetIs_min_value_exact

      public boolean isSetIs_min_value_exact()
      Returns true if field is_min_value_exact is set (has been assigned a value) and false otherwise

    • setIs_min_value_exactIsSet

      public void setIs_min_value_exactIsSet(boolean value)

    • getNan_count

      public long getNan_count()
      Count of NaN values in the column; only present if physical type is FLOAT or DOUBLE, or logical type is FLOAT16. If this field is not present, readers MUST assume NaNs may be present (i.e. MUST assume nan_count > 0 and MAY NOT assume nan_count == 0).

    • setNan_count

      public Statistics setNan_count(long nan_count)
      Count of NaN values in the column; only present if physical type is FLOAT or DOUBLE, or logical type is FLOAT16. If this field is not present, readers MUST assume NaNs may be present (i.e. MUST assume nan_count > 0 and MAY NOT assume nan_count == 0).

    • unsetNan_count

      public void unsetNan_count()

    • isSetNan_count

      public boolean isSetNan_count()
      Returns true if field nan_count is set (has been assigned a value) and false otherwise

    • setNan_countIsSet

      public void setNan_countIsSet(boolean value)

    • setFieldValue

      public void setFieldValue(Statistics._Fields field, Object value)
      Specified by:
      setFieldValue in interface org.apache.thrift.TBase<Statistics,Statistics._Fields>

    • getFieldValue

      public Object getFieldValue(Statistics._Fields field)
      Specified by:
      getFieldValue in interface org.apache.thrift.TBase<Statistics,Statistics._Fields>

    • isSet

      public boolean isSet(Statistics._Fields field)
      Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
      Specified by:
      isSet in interface org.apache.thrift.TBase<Statistics,Statistics._Fields>

    • equals

      public boolean equals(Object that)
      Overrides:
      equals in class Object

    • equals

      public boolean equals(Statistics that)

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • compareTo

      public int compareTo(Statistics other)
      Specified by:
      compareTo in interface Comparable<Statistics>

    • fieldForId

      public Statistics._Fields fieldForId(int fieldId)
      Specified by:
      fieldForId in interface org.apache.thrift.TBase<Statistics,Statistics._Fields>

    • read

      public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException
      Specified by:
      read in interface org.apache.thrift.TSerializable
      Throws:
      org.apache.thrift.TException

    • write

      public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException
      Specified by:
      write in interface org.apache.thrift.TSerializable
      Throws:
      org.apache.thrift.TException

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • validate

      public void validate() throws org.apache.thrift.TException
      Throws:
      org.apache.thrift.TException