What causes "SinkError::ElasticSearchOpenSearch(anyhow!(err))" in risingwavelabs/risingwave?

Check cluster health and reachability: GET _cluster/health from the sink URL.

risingwavelabs/risingwave · error · SinkError::ElasticSearchOpenSearch

SinkError::ElasticSearchOpenSearch(anyhow!(err))

Error message

SinkError::ElasticSearchOpenSearch(anyhow!(err))

What it means

RisingWave converts any ::elasticsearch::Error into the ElasticSearchOpenSearch SinkError variant. It means an Elasticsearch client operation (index, bulk, connection) failed and the driver error was wrapped into an anyhow error.

Solutions

Check cluster health and reachability: GET _cluster/health from the sink URL.
Inspect the wrapped HTTP status/body in the error message; fix mapping conflicts by updating the index mapping or coercing data.
Verify credentials/API key if security (X-Pack) is enabled on the cluster.
Reduce bulk batch size if 429/413 errors appear.
Align the elasticsearch crate major version with the cluster version.

Defensive patterns

Strategy: try-catch

Validate before calling

// pre-check cluster availability before sink creation
curl -fsS -u "$ES_USER:$ES_PASS" "$ELASTIC_URL/_cluster/health" | jq -e '.status'

Type guard

fn is_retryable_es_error(err: &elasticsearch::Error) -> bool {
    use elasticsearch::Error::*;
    matches!(err, Io(_) | ServerError(_))
}

Try / catch

// inspect the wrapped response status before deciding retry
match err {
    e if e.to_string().contains("429") || e.to_string().contains("413") => retry_with_backoff(),
    _ => alert_and_fail(),
}

Prevention

Pre-create the index with the correct mapping before starting the sink.
Use API keys/credentials configured via secrets, not inline DDL.
Cap bulk batch sizes below the cluster's http.max_content_length.
Monitor _cluster/health and catch throttling (429) early.

When it happens

Trigger: Any elasticsearch crate error during sink writes: failed HTTP request, non-success Elasticsearch response, connection/transport failure, or deserialization failure of the response.

Common situations: Elasticsearch cluster unreachable or restarting, index mapping conflicts (wrong field type), bulk request too large, authentication against a secured cluster missing, or elasticsearch crate version mismatch with the cluster.

Understand the failure class

Background: "API error: {status}" and "HTTP 401/403/404/429/5xx" errors: non-2xx HTTP responses explained — this error's family across 27 libraries.

Related errors

AI-assisted analysis of risingwavelabs/risingwave@6469eb736d (2026-09-11). Data as JSON: /api/errors/9c92cbfa7263a0ae. Report an issue: GitHub.

Appendix: source

Thrown at src/connector/src/sink/mod.rs:1297

        SinkError::Remote(anyhow!(value))
    }
}

impl From<RedisError> for SinkError {
    fn from(value: RedisError) -> Self {
        SinkError::Redis(value.to_report_string())
    }
}

impl From<tiberius::error::Error> for SinkError {
    fn from(err: tiberius::error::Error) -> Self {
        SinkError::SqlServer(anyhow!(err))
    }
}

impl From<::elasticsearch::Error> for SinkError {
    fn from(err: ::elasticsearch::Error) -> Self {
        SinkError::ElasticSearchOpenSearch(anyhow!(err))
    }
}

impl From<::opensearch::Error> for SinkError {
    fn from(err: ::opensearch::Error) -> Self {
        SinkError::ElasticSearchOpenSearch(anyhow!(err))
    }
}

impl From<tokio_postgres::Error> for SinkError {
    fn from(err: tokio_postgres::Error) -> Self {
        SinkError::Postgres(anyhow!(err))
    }
}

#[cfg(test)]
mod tests {
    use std::collections::BTreeMap;

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