Struct PageMetrics 

struct PageMetrics {
    num_buffered_values: u32,
    num_buffered_rows: u32,
    page_size_exemption: usize,
    num_page_nulls: u64,
    num_page_nans: Option<u64>,
    repetition_level_histogram: Option<LevelHistogram>,
    definition_level_histogram: Option<LevelHistogram>,
}

Fields

num_buffered_values: u32

num_buffered_rows: u32

page_size_exemption: usize

Encoded bytes that the data page byte limit does not apply to, because they belong to the page’s mandatory first value and cannot be moved elsewhere. Zero unless that value alone exceeded the limit and the encoding compresses against the preceding value; see ColumnValueEncoder::compresses_against_previous_value.

num_page_nulls: u64

num_page_nans: Option<u64>

repetition_level_histogram: Option<LevelHistogram>

definition_level_histogram: Option<LevelHistogram>

Implementations

impl PageMetrics

fn new() -> Self

fn with_repetition_level_histogram(self, max_level: i16) -> Self

Initialize the repetition level histogram

fn with_definition_level_histogram(self, max_level: i16) -> Self

Initialize the definition level histogram

fn new_page(&mut self)

Resets the state of this PageMetrics to the initial state. If histograms have been initialized their contents will be reset to zero.

Trait Implementations

impl Default for PageMetrics

fn default() -> PageMetrics

Returns the “default value” for a type.