---
title: "Data Destination - Amazon S3 Parquet"
slug: "data-destination-s3-parquet"
updated: 2024-10-07T05:27:18Z
published: 2024-10-07T05:27:18Z
canonical: "documents.trocco.io/data-destination-s3-parquet"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://documents.trocco.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Data Destination - Amazon S3 Parquet

## summary

Help page for ETL Configuration of Data Settings for transferring data in Apache Parquet (.parquet) format to Amazon Web Services' S3.

## constraints

- none in particular

## Setting items

### STEP1 Basic settings

| item name | indispensable | default value | Contents |
| --- | --- | --- | --- |
| S3 Connection Configuration | Yes | - | Select the previously registered Connection Configuration that has the necessary permissions for this ETL Configuration. Please refer to [another page](/docs/connection-configuration-s3) for Connection Configuration. |
| region | Yes | ap-northeast-1 | Enter the region you specified when creating the bucket to be used. Please refer to the [official AWS page](https://aws.amazon.com/jp/s3/faqs/) for an explanation of regions. |
| bucket | Yes | - | Specify the name of the Data Destination bucket. |
| path prefix | Yes | - | Specify the Data Destination path prefix. TROCCO outputs multiple files in the Data Destination bucket, beginning with the path prefix. [Custom Variables](/docs/custom-variables) can also be used to dynamically determine the value of a setting during ETL Configuration of TROCCO's data. |
| compressed format | Yes | uncompressed | Specifies the file compression method. ・umcompressed ・snappy ・gzip ・lzo ・broti ・lz4 ・zstd You can choose from |

### STEP2 Detailed settings

| item name | default value | Contents |
| --- | --- | --- |
| Naming Conventions for Multiple File Output | .%03d.%02d | You can set the rules for naming files when outputting multiple files. |
| Output file extension | parquet | - |
| Default timestamp format | %Y-%m-%d %H:%M:%S.%6N %z | - |
| Default time zone | UTC | - |
| Block size (byte) | 134217728 | - |
| Page size (byte) | 1048576 | - |
| Maximum padding size (byte) | 8388608 | - |
| Data Catalog Setting | local | - |
| Column Setting | - | - |