Glacier Select: How to fetch column headers from CSV File

[harshad-tally]

Greetings,

We are using Glacier Select to fetch filtered data from the CSV File stored in the Glacier Vaults. This CSV file contains column headers at the first line of the file. When we are trying to fetch the data using query, column headers aren't included in the response file.

Using following code snippet to fetch data using Glacier Select:

const selectRetrievalRequestConfig = {
            accountId: '-',
            vaultName,
            jobParameters: {
                Type: 'select',
                ArchiveId,
                Description: `Retrieving Archive using Select query`,
                SNSTopic: completionNotificationSnsArn,
                Tier: 'Standard',
                SelectParameters: {
                    InputSerialization: {
                        csv: {
                            FileHeaderInfo: FileHeaderInfo.None,
                            FieldDelimiter: ',',
                            QuoteCharacter: '"'
                        }
                    },
                    ExpressionType: ExpressionType.SQL,
                    Expression: "SELECT * FROM archive WHERE column_a='value_a';",
                    OutputSerialization: {
                        csv: {
                            QuoteFields: QuoteFields.Always,
                            RecordDelimiter: '\r\n',
                            FieldDelimiter: ',',
                            QuoteCharacter: '"'
                        }
                    }
                },
                OutputLocation: {
                    S3: {
                        BucketName,
                        Prefix: 's3-output-path',
                        StorageClass: StorageClass.Standard
                    }
                }
            }
        };

        const retrieveRequestResponse = await glacierClient.send(
            new InitiateJobCommand(selectRetrievalRequestConfig)
        );

Request you to guide - How can we get the column header from CSV File in the response using Glacier Select?