Exporting data from Google Cloud Storage to Amazon S3

Question

I would like to transfer data from a table in BigQuery, into another one in Redshift. My planned data flow is as follows:

BigQuery -> Google Cloud Storage -> Amazon S3 -> Redshift

I know about Google Cloud Storage Transfer Service, but I'm not sure it can help me. From Google Cloud documentation:

Cloud Storage Transfer Service

This page describes Cloud Storage Transfer Service, which you can use to quickly import online data into Google Cloud Storage.

I understand that this service can be used to import data into Google Cloud Storage and not to export from it.

Is there a way I can export data from Google Cloud Storage to Amazon S3?

Answer 1

You can use gsutil to copy data from a Google Cloud Storage bucket to an Amazon bucket, using a command such as:

gsutil -m rsync -rd gs://your-gcs-bucket s3://your-s3-bucket

Note that the -d option above will cause gsutil rsync to delete objects from your S3 bucket that aren't present in your GCS bucket (in addition to adding new objects). You can leave off that option if you just want to add new objects from your GCS to your S3 bucket.

Answer 2

Go to any instance or cloud shell in GCP

First of all configure your AWS credentials in your GCP

aws configure

if this is not recognising the install AWS CLI follow this guide https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-install.html

follow this URL for AWS configure https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html

Attaching my screenshot

Then using gsutil

gsutil -m rsync -rd gs://storagename s3://bucketname

16GB data transferred in some minutes

Answer 3

Using the gsutil tool we can do a wide range of bucket and object management tasks, including:

1. Creating and deleting buckets.
2. Uploading, downloading, and deleting objects.
3. Listing buckets and objects. Moving, copying, and renaming objects.

we can copy data from a Google Cloud Storage bucket to an amazon s3 bucket using gsutil rsync and gsutil cp operations. whereas

gsutil rsync collects all metadata from the bucket and syncs the data to s3

gsutil -m rsync -r gs://your-gcs-bucket s3://your-s3-bucket

gsutil cp copies the files one by one and as the transfer rate is good it copies 1 GB in 1 minute approximately.

gsutil cp gs://<gcs-bucket> s3://<s3-bucket-name>

if you have a large number of files with high data volume then use this bash script and run it in the background with multiple threads using the screen command in amazon or GCP instance with AWS credentials configured and GCP auth verified.

Before running the script list all the files and redirect to a file and read the file as input in the script to copy the file

gsutil ls gs://<gcs-bucket> > file_list_part.out

Bash script:

#!/bin/bash
echo "start processing" 
input="file_list_part.out"
while IFS= read -r line
do
    command="gsutil cp ${line} s3://<bucket-name>"
    echo "command :: $command :: $now"
    eval $command
    retVal=$?
    if [ $retVal -ne 0 ]; then
        echo "Error copying file"
        exit 1
    fi
    echo "Copy completed successfully"
done < "$input"
echo "completed processing"

execute the Bash script and write the output to a log file to check the progress of completed and failed files.

bash file_copy.sh > /root/logs/file_copy.log 2>&1

Answer 4

Using Rclone (https://rclone.org/).

Rclone is a command line program to sync files and directories to and from

Google Drive
Amazon S3
Openstack Swift / Rackspace cloud files / Memset Memstore
Dropbox
Google Cloud Storage
Amazon Drive
Microsoft OneDrive
Hubic
Backblaze B2
Yandex Disk
SFTP
The local filesystem

Answer 5

I needed to transfer 2TB of data from Google Cloud Storage bucket to Amazon S3 bucket. For the task, I created the Google Compute Engine of V8CPU (30 GB).

Allow Login using SSH on the Compute Engine. Once logedin create and empty .boto configuration file to add AWS credential information. Added AWS credentials by taking the reference from the mentioned link.

Then run the command:

gsutil -m rsync -rd gs://your-gcs-bucket s3://your-s3-bucket

The data transfer rate is ~1GB/s.

Hope this help. (Do not forget to terminate the compute instance once the job is done)

Answer 6

Tools like gsutil and aws s3 cp won't use multipart uploads/downloads, so will have poor performance for large files.

Skyplane is a much faster alternative for transferring data between clouds (up to 110x for large files). You can transfer data with the command:

skyplane cp -r s3://aws-bucket-name/ gcs://google-bucket-name/

(disclaimer: I am a contributor)

Answer 7

For large amounts of large files (100MB+) you might get issues with broken pipes and other annoyances, probably due to multipart upload requirement (as Pathead mentioned).

For that case you're left with simple downloading all files to your machine and uploading them back. Depending on your connection and data amount, it might be more effective to create VM instance to utilize high-speed connection and ability to run it in the background on different machine than yours.

Create VM machine (make sure the service account has access to your buckets), connect via SSH and install AWS CLI (apt install awscli) and configure the access to S3 (aws configure).

Run these two lines, or make it a bash script, if you have many buckets to copy.

gsutil -m cp -r "gs://$1" ./
aws s3 cp --recursive "./$1" "s3://$1"

(It's better to use rsync in general, but cp was faster for me)