boto3 s3 copy_object with ContentEncoding argument

Question

I'm trying to copy s3 object with boto3 command like below

import boto3 
client = boto3.client('s3')
client.copy_object(Bucket=bucket_name, ContentEncoding='gzip', CopySource=copy_source, Key=new_key)

To copy the object succeeded, but ContentEncoding metadata was not added to the object.

When I use the console to add Content-Encoding metadata, there was no problem.

But using python boto3 copy command, it cannot do that.

Here's a document link about client.copy_object()

And the application versions are like this.

python=2.7.16

boto3=1.0.28

botocore=1.13.50

Thank you in advance.

Just checking... Was the original object in gzip format? Did it have the `ContentEncoding` metadata set? — John Rotenstein, Mar 02 '20 at 10:15
original object is gzip from another etl data but, has not "Content-Encoding=gzip" tag. — Kuem Hyang Park, Mar 05 '20 at 04:42

score 3 · Answer 1 · answered Oct 08 '20 at 21:41

3

Try adding MetadataDirective='REPLACE' to your copy_object call

client.copy_object(Bucket=bucket_name, ContentEncoding='gzip', CopySource=copy_source, Key=new_key, MetadataDirective='REPLACE')

answered Oct 08 '20 at 21:41

joshua O

1 Answers1