mito2::read::scan_util

Struct ScanMetricsSet

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struct ScanMetricsSet {
Show 25 fields
    prepare_scan_cost: Duration,
    build_reader_cost: Duration,
    scan_cost: Duration,
    convert_cost: Duration,
    yield_cost: Duration,
    total_cost: Duration,
    num_rows: usize,
    num_batches: usize,
    num_mem_ranges: usize,
    num_file_ranges: usize,
    build_parts_cost: Duration,
    rg_total: usize,
    rg_fulltext_filtered: usize,
    rg_inverted_filtered: usize,
    rg_minmax_filtered: usize,
    rg_bloom_filtered: usize,
    rows_before_filter: usize,
    rows_fulltext_filtered: usize,
    rows_inverted_filtered: usize,
    rows_bloom_filtered: usize,
    rows_precise_filtered: usize,
    num_sst_record_batches: usize,
    num_sst_batches: usize,
    num_sst_rows: usize,
    first_poll: Duration,

}
Expand description

Verbose scan metrics for a partition.

Fields§

§prepare_scan_cost: Duration

Duration to prepare the scan task.

§build_reader_cost: Duration

Duration to build the (merge) reader.

§scan_cost: Duration

Duration to scan data.

§convert_cost: Duration

Duration to convert batches.

§yield_cost: Duration

Duration while waiting for yield.

§total_cost: Duration

Duration of the scan.

§num_rows: usize

Number of rows returned.

§num_batches: usize

Number of batches returned.

§num_mem_ranges: usize

Number of mem ranges scanned.

§num_file_ranges: usize

Number of file ranges scanned.

§build_parts_cost: Duration

Duration to build file ranges.

§rg_total: usize

Number of row groups before filtering.

§rg_fulltext_filtered: usize

Number of row groups filtered by fulltext index.

§rg_inverted_filtered: usize

Number of row groups filtered by inverted index.

§rg_minmax_filtered: usize

Number of row groups filtered by min-max index.

§rg_bloom_filtered: usize

Number of row groups filtered by bloom filter index.

§rows_before_filter: usize

Number of rows in row group before filtering.

§rows_fulltext_filtered: usize

Number of rows in row group filtered by fulltext index.

§rows_inverted_filtered: usize

Number of rows in row group filtered by inverted index.

§rows_bloom_filtered: usize

Number of rows in row group filtered by bloom filter index.

§rows_precise_filtered: usize

Number of rows filtered by precise filter.

§num_sst_record_batches: usize

Number of record batches read from SST.

§num_sst_batches: usize

Number of batches decoded from SST.

§num_sst_rows: usize

Number of rows read from SST.

§first_poll: Duration

Elapsed time before the first poll operation.

Implementations§

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impl ScanMetricsSet

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fn with_prepare_scan_cost(self, cost: Duration) -> Self

Attaches the prepare_scan_cost to the metrics set.

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fn merge_scanner_metrics(&mut self, other: &ScannerMetrics)

Merges the local scanner metrics.

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fn merge_reader_metrics(&mut self, other: &ReaderMetrics)

Merges the local reader metrics.

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fn observe_metrics(&self)

Observes metrics.

Trait Implementations§

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impl Debug for ScanMetricsSet

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for ScanMetricsSet

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fn default() -> ScanMetricsSet

Returns the “default value” for a type. Read more

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