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RefreshExternalCollection()

Addedv3.0.x

This operation scans the data files in the schema-defined external storage and generates metadata files that record their mapping relationship to those data files.

func (c *Client) RefreshExternalCollection(ctx context.Context, option RefreshExternalCollectionOption, callOptions ...grpc.CallOption) (*RefreshExternalCollectionResult, error)

Request Syntax

option := client.NewRefreshExternalCollectionOption(collectionName).
    WithExternalSource(externalSource string).
    WithExternalSpec(externalSpec string).
    WithDbName(dbName string)
    
result, err := client.RefreshExternalCollection(option)

PARAMETERS:

• collectionName (string) -

  The name of an existing external collection.

BUILDER METHODS:

• WithExternalSource(externalSource string)

  This sets the source data URI, which should be the name of an accessible external volume..

• WithExternalSpec(externalSpec string)

  The external source specifications, which are a set of secondary parameters:

  • format (string) -

    The format of the target source data files.

    Possible values are parquet, vortex, lance-table, and iceberg-table.

• WithDbName(dbName string)

  The name of the database to which the target external collection belongs.

RETURN TYPE:

*RefreshExternalCollectionResult

RETURNS:

A type struct of the following shape.

type RefreshExternalCollectionResult struct {
    JobID int64
}

PARAMETERS:

• JobID (int64) -

  An integer that indicates an asynchronous job that has been created.

Examples

refreshResult, err := client.RefreshExternalCollection(ctx,
    client.NewRefreshExternalCollectionOption("test_collection"))

jobID := refreshResult.JobID

for {
    progress, _ := client.GetRefreshExternalCollectionProgress(ctx,
        client.NewGetRefreshExternalCollectionProgressOption(jobID))

    fmt.Printf("State: %s\n", progress.State)

    if progress.State == entity.RefreshStateCompleted {
        fmt.Println("Refresh completed!")
        break
    }
    if progress.State == entity.RefreshStateFailed {
        fmt.Printf("Refresh failed: %s\n", progress.Reason)
        break
    }
    time.Sleep(2 * time.Second)
}