opensearch-dsl 0.3.1

Strongly typed OpenSearch DSL
Documentation 
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/// Gap policies are a mechanism to inform the pipeline aggregation about the
/// desired behavior when "gappy" or missing data is encountered. All pipeline
/// aggregations accept the `gap_policy` parameter.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Deserialize, Serialize)]
#[serde(rename_all = "snake_case")]
pub enum GapPolicy {
    /// This option treats missing data as if the bucket does not exist. It will
    /// skip the bucket and continue calculating using the next available value.
    Skip,

    /// This option will replace missing values with a zero (0) and pipeline
    /// aggregation computation will proceed as normal.
    InsertZeros,

    /// This option is similar to skip, except if the metric provides a non-null,
    /// non-NaN value this value is used, otherwise the empty bucket is skipped.
    KeepValues,
}